You’ll get a low-profile, corrosion-resistant aluminum mount that locks dual 360° ball joints for compact, repeatable fish-finder placement on kayaks or tournament boats. It uses AMPS plates, ships with hardware, and offers one-handed tweaks plus stable sightlines under shock and cold. Check base diameter and transducer cable routing against your hull; some Lowrance and Humminbird models won’t fit. It costs more than polymer options but gives better long-term stability—scroll on to see full fitment and install tips.
Some Key Takeaways
- Sturdy aluminum-alloy construction offers corrosion resistance, low weight, and better long-term stability than polymer mounts.
- Dual 360° ball joints provide rapid, one-handed adjustment and repeatable sightlines for kayak and tournament use.
- AMPS-pattern plate and supplied hardware simplify attachment, but confirm hole alignment before purchase.
- Not compatible with several models (Lowrance Hook Reveal 5; select Humminbird Helix/Solix models); check transducer routing and base clearance.
- Compact 2.4″ base and 5.4″ height fit tight decks but require a flat mounting area and space for cable/hardware.
S108 Quick Verdict: Who This Mount Is Best For
If you need a sturdy, low-profile mount that handles both box-style and round-ball fish finders, the S108 delivers: it’s built from corrosion-resistant aluminum alloy, offers dual 360° rotation for flexible positioning, and fits most Garmin, Lowrance, Humminbird, and Raymarine units (check the compatibility exceptions before buying). You’ll appreciate this if you value simplicity and durable mounting on small vessels. Kayak anglers get compact, stable placement without cluttering cockpit space. Tournament fishermen gain rapid adjustability and repeatable sightlines during competitive runs. Install, tighten, and trust the mount; it’s designed to let you focus on fishing, not gear failure. It’s an ideal choice for paddlers and anglers looking to enhance their on-water adventures with reliable mounting solutions.
What the S108 Offers: Precise Features and Build Quality
Having covered who benefits most from the S108, let’s look at what it actually brings to the boat: a compact, aluminum-alloy mount engineered for repeated, precise adjustment and long-term marine use. You’ll get dual 360° rotation from both ball mounts and bracket, letting you orient devices fast and lock them firm. The AMPS-pattern plates and supplied hardware simplify attachment; dual-purpose rectangle and round plates add versatility. Build emphasizes mount corrosion resistance and shock/cold tolerance without excess weight. Twin ball swivel joints deliver reliable ball joint ergonomics for one-handed tweaks, keeping your setup stable while you chase freedom on the water. Designed for kayak and small-boat anglers seeking durable, lightweight mounting solutions, the S108 also complements marine navigation gear like compasses and fishfinders.
Compatibility Checklist: Which Fish Finders and Boats Fit (and Don’t)
Because fit matters more than specs alone, use this checklist to confirm the S108 will work for your fishfinder and craft. Verify AMPS hole pattern or pre-drilled holes match your unit plate; measure bracket footprint. Confirm transducer compatibility by checking cable routing and ball joint position so the transducer clears hull edges and mounting hardware. Note incompatible models: Lowrance Hook Reveal 5 and Humminbird Helix 5/7/8/9/10/12/15 and Solix 10. For boats, make sure 2.4″ base clears crowded decks and provides secure anchoring. For kayak fitment, confirm flat mounting area and that 5.4″ height won’t impede storage or balance. Consider mounts designed specifically for kayak use to ensure portability and stability on the water.
Install and Adjust in 5 Steps: Mounting, Rotation, and Troubleshooting
You’ve already checked fit and clearance; now let’s get the S108 mounted, adjusted, and working. Step 1: position base, mark AMPS holes, drill pilot holes. Step 2: fasten base with supplied screws, torque evenly. Step 3: attach bracket and device plate, use TPU ball for fine placement. Step 4: rotate both 360° joints to desired view, perform angle calibration with your unit, then tighten side switches securely. Step 5: run a quick tool maintenance check—inspect screws, corrosion, and swivel friction before launch. Troubleshoot looseness by re-torquing or replacing fasteners; retest angle calibration. For reliable on-water performance, periodically inspect and service mounting hardware to prevent failure during kayak adventures, especially around power pole systems.
Buy or Skip? Performance, Durability, and Value Compared to Alternatives
While shopping for a fish-finder mount, weigh the S108’s solid aluminum build and full 360° articulation against competing plastic or partially metal mounts—its corrosion- and shock-resistant alloy, 2.4″ heavy-duty base, and dual-ball adjustment give you greater long-term stability and fine-tuning than most budget polymer options. You’ll get superior weight distribution, minimized flex, and reliable vibration damping for open-water use. Price comparison favors aluminum if you value longevity; polymers cost less upfront but may deform or corrode. Choose the S108 if you want durable, low-maintenance performance and freedom to mount confidently; skip it only if initial cost is prohibitive. This makes it a particularly good match for kayaks and other products aimed at outdoor enthusiasts who enjoy adventures on the water.
Some Questions Answered
Does the Mount Come With a Corrosion-Resistant Coating for Saltwater Use?
Yes — you’ll get corrosion resistance from the aluminum alloy and its surface finish, designed for marine use. The part’s material resists rust, salt spray and shock; it’s water resistant rather than fully sealed. You’ll still want to rinse with fresh water after saltwater exposure and inspect fasteners periodically. The finish provides practical protection, but long-term saltwater durability depends on maintenance and avoiding prolonged exposure without care.
Can the Base Be Permanently Bolted Through-Hull for Extra Security?
Yes — you can bolt the base through hull for extra security, but you’ll need proper deck reinforcement. Drill through the mounting location, use marine-grade fasteners and backing plate or reinforcing block under the deck to spread loads. Seal all penetrations with marine sealant or bedding compound to prevent leaks and corrosion. Tighten to manufacturer torque, check periodically, and consider anti-corrosion washers to keep the aluminum alloy durable in saltwater.
Are Any Anti-Theft or Locking Accessories Included or Available?
No, none are included; the mount doesn’t ship with locking mechanisms or security plates. You can retrofit theft deterrents: bolt the base through-hull, add tamper‑proof screws, fit a keyed clamp or aftermarket security plate that covers the fasteners, or use a small cable lock through the mount holes. You’ll want marine‑grade stainless hardware and corrosion‑resistant locks to keep your device secure while preserving freedom to remove it quickly.
Will the Mount Interfere With Trolling Motor Mounting Locations?
No, it shouldn’t interfere if you position it correctly; you’ll need to verify motor placement and prop clearance before final mounting. Mount the base where the bracket and dual 360° rotation won’t sit in the trolling motor’s arc. Use the AMPS hole pattern and pre-drilled holes to shift the plate forward or aft as needed. Confirm clearance at full tilt and during steering to avoid prop strikes and obstruction.
Can the Arm Support Accessories Like a Cup Holder or Camera Adapter?
Yes — you can mount light accessories, but check accessory compatibility and load capacity first. The aluminum arm and dual 360° ball joints handle small, low-profile items like cup holders or lightweight camera adapters if you distribute weight and keep leverage minimal. Don’t exceed the mount’s practical load: heavy cameras or bulky holders will stress joints and reduce stability. Measure accessory weight and balance; tighten all clamps and test before heading out.
