You’ll find the S108 aluminum-alloy mount gives you compact, heavy-duty support with dual 360° rotation and twin ball joints for repeatable viewing angles. It’s corrosion-resistant and impact-tolerant, with a 2.4" base, 5.4" bracket height, AMPS pattern and alternate hole plates for broad compatibility. Installation is straightforward but requires correct footprint and corrosion-resistant fasteners. It handles kayak and small-boat use well, though some chartplotter models are excluded, and more details follow below.
Some Key Takeaways
- Sturdy aluminum-alloy construction offers corrosion and impact resistance for long-term marine use.
- Dual 360° rotation with two ball-swivel joints provides highly repeatable, multi-angle positioning.
- Compact 2.4" base and 5.4" bracket height suit kayaks and small boats but need clearance planning.
- Includes AMPS-pattern plate, alternative hole patterns, TPU ball, fasteners, and instruction sheet for broad compatibility.
- Excludes several common models (e.g., Humminbird Helix and Lowrance Hook Reveal 5); verify device hole pattern before purchase.
Quick Verdict and Who the S108 Aluminum Alloy Mount Is Best For
If you need a compact, heavy-duty mount that swivels into position and holds chartplotters or fish finders securely, the S108 is a strong choice. You get aluminum-alloy construction, dual 360° rotation, and dual ball swivel joints that deliver stable, repeatable viewing angles. Its compact base and disassemblable bracket favor versatile portability for boats and kayaks, matching varied angler demographics from solo kayak users to small-boat captains. You’ll appreciate corrosion resistance and impact tolerance for persistent use. If you value rugged flexibility and straightforward mounting, the S108 gives dependable support without excess weight or complexity. It’s well suited for kayak anglers who want portable, dependable mounting solutions.
What’s in the Box and Key Specs You Need to Know
While compact, the S108 kit gives you everything required for a secure, adjustable fish-finder installation. You get a 2.4" diameter aluminum alloy base, bracket with 5.4" overall height, dual-purpose rectangular and round mount plates, TPU ball for the swivel connection, fasteners, and an instruction sheet. Included accessories cover direct AMPS-pattern fitting and alternative hole patterns for broader device compatibility. Mounting dimensions—base diameter, bracket height, and plate hole spacing—are stamped in documentation and matter for clearance and stability. The kit's corrosion-resistant, impact-resistant construction and dual 360° rotation deliver robust, free-range positioning. Perfect for kayakers and beginner kayaking enthusiasts, the mount is designed to fit common kayak setups and provide reliable performance on the water with secure attachment.
Step-by-Step Installation and Adjustment Tips for Boats and Kayaks
Now that you know what's included and the key dimensions, begin installation by planning the mounting location on your boat or kayak to guarantee clearance for the 2.4" base and 5.4" bracket height and to align the AMPS or alternative hole patterns on the device plate. Mark fastener points, drill pilot holes, and secure the base with corrosion-resistant hardware. Attach the bracket and dual ball joints, check 360° rotation, then tighten the side switch for desired lock. Route power and transducer leads through protected channels, maintaining neat cable routing and strain relief. Verify unobstructed view and freedom of movement before final torque. For longer-lasting performance in marine environments, consider using corrosion-resistant hardware and regular maintenance to prevent saltwater damage.
Performance Test: Stability, Rotation, and Corrosion Resistance in Real Use
When you mount the S108 on a boat or kayak, assess stability by simulating typical underway conditions and heavy rod impacts to confirm the 2.4" heavy‑duty base and 5.4" bracket resist wobble and maintain device alignment. You should run sea trialing runs at varied speeds, check dual 360° rotation under load, and exercise both ball swivel joints through their ranges. Measure play after repeated adjustments to evaluate wear. Verify vibration damping with accelerometer or by feel during trolling. Inspect aluminum alloy for early corrosion at joints and fasteners after salt exposure. Conclude on reliability for unfettered, independent use. Also evaluate compatibility with common transducer arms sold for kayakers and beginners to ensure a secure fit.
Compatibility Checklist, Limits, and Final Pros and Cons for Buying Decisions
Because you’ll want to confirm fit and limits before committing, start with a focused compatibility checklist that covers device models, hole patterns, and mounting surfaces; verify the S108 supports your fish finder/chartplotter (Garmin, Lowrance, Humminbird, Raymarine supported, but excludes Humminbird Helix 5/7/8/9/10/12/15, Solix 10 and Lowrance Hook Reveal 5), confirm you can use either the rectangular or round plate and TPU ball swivel for your unit’s footprint or the AMPS pattern, check that a 2.4" base and 5.4" bracket clear your installation area, and assess whether the aluminum alloy construction and dual 360° rotation meet your durability and angle-adjustment needs.
Device compatibility is broad; mounting limitations include excluded models and tight clearances. Pros: sturdy alloy, multi-angle freedom, AMPS support. Cons: model exclusions, footprint clearance required. The S108 is also well-suited for kayakers and beginners looking for reliable camera mount options on the water.
Some Questions Answered
Will This Mount Interfere With My Boat's Livewell Aeration Lines?
No — it shouldn’t interfere with your livewell aeration lines if you position it properly. You’ll avoid line clutter by mounting the 2.4" base away from aeration hoses and routing lines along the hull or under fittings. The dual 360° rotation and separate base/bracket installation let you optimize placement to preserve water flow and access. Secure clamps and tidy routing will keep lines clear and maintain reliable aeration.
Can I Use It to Mount a Small Action Camera?
Yes — you can mount a small action camera, provided you adapt the plate and fastener to the camera’s thread. The mount offers camera compatibility via its dual plates and TPU ball swivel, letting you position the camera with dual 360° rotation. For vibration isolation, add a small rubber or foam pad between camera and plate and use a dampening screw washer; that’ll reduce high-frequency vibration and improve footage stability while you’re free to move.
Are Replacement TPU Balls or Plates Sold Separately?
Yes — you can often buy spare TPU balls and ball options separately from third-party vendors. Check compatibility materials and hole patterns to guarantee fit with your S108 plates; aluminum plates and TPU balls must match AMPS or pre-drilled layouts. Measure ball diameter and socket type before ordering. Search marine accessory vendors, OEM parts lists, or universal mounting suppliers for replacement TPU,ball options that match your mounting system and installation needs.
Does the Mount Work With Adhesive Deck Pads?
Yes — you can use adhesive deck pads, but you'll need to assess adhesive durability and pad removal risks. You’ll mount the S108 base to the pad then secure the bracket; strong marine-grade pads usually hold but may degrade under heavy loads, salt, or UV. For freedom of repositioning or heavy equipment, bolting to deck or using AMPS holes is more reliable. Expect easier removal with quality adhesive removers and heat.
Is There a Recommended Torque Spec for the Mounting Bolts?
Use moderate installation torque — tighten bolts to about 6–8 ft·lb (8–11 N·m). You’ll avoid over‑stress while ensuring clamping force for stability. Apply a marine grade threadlocker or anti‑seize to reduce fasteners corrosion and periodic loosening. Check torque after initial use and seasonally. If you use softer deck pads or plastics, back off slightly and increase clamp area; if you need higher torque, use washers to spread load.
