Hi All, I'm installing a downrigger to catch big salmon. There is an existing aluminum plate aft of the spinnaker winch that I'm removing and replacing with a larger one. I plan to use the same hole pattern so I don't need to drill new holes. The original plate had no backing on the underside. Not sure what it's purpose was.
Looking for some input: 1. Is a backing plate needed? The nearby winches don't have any backing other than washers. 2. what should I use as the backing plate? Marine plywood? Would normal plywood be okay? Getting aluminum made to exactly fit there would be a challenge I think. With wood I could craft it at the boat for an exact fit. Some links to pics: Original plate from top: https://flic.kr/p/24BK3KM Backing/underside: https://flic.kr/p/Gu1cqL Nearby Winch underside w/o backing plate: https://flic.kr/p/EXCp5P Thanks, Jeremy C&C 34-1 #041 Vancouver BC
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