As an option to provide additional strength to your Kayalu Radpole, Kayalu Surfpole, Kayalu ParkerMount, RAM Mounts fishing rod holders and other RAM Mounts bases on deck, this 3" x 3" marine-grade aluminum backing plate can be installed beneath the deck surface where it mates with the base above.
The backing plate is manufactured by RAM Mounts of marine-grade aluminum. The plate has 8 holes, each tapped with a 10-24 thread. The holes are aligned to support RAM bases including those used for Kayalu Surfpole and Radpole (round with 1.5" ball) and ParkerMount (square with 1" ball). The holes are also compatible with any base aligning to an AMPS hole pattern.
The backing plate includes (4) 1" bolts with pre-applied thread locker and (4) nylon-insert locknuts. The bolts included with this plate match the threads in the backing plate. Kayalu includes a separate set of stainless steel bolts and locknuts with all bases, which may be substituted.
Four SBR rubber pads are included with our backing plate kit to provide a cushion between the backing plate and the underside of your deck surface.
A 7/32" drill bit is included with our backing plate kit to streamline installation.
The backing plate must be mated to a planar (flat) surface. Even if padded, a backing plate may damage a contoured surface that is sandwiched between it and the gear base if excessive force is applied. For thinner deck walls, we do not recommend installation of any gear that would apply an inordinate amount leverage unless the deck wall itself is first reinforced. A layer of marine-grade plywood may be shaped to provide a strong mating surface between this backing plate and the underside of a contoured deck, while providing a resilient cushion to absorb leveraged forces.