Stevep33,

I had a lot of shudder in the swim platform from waves. No matter what I did to the brackets, I never could get rid of the movement for the long term until i tried composite door shims. You should be able to find them at any hardware store.

Just use a hammer to drive them down between the platform bracket and the transom brackets. Then break off thr excess shim. They have held up Rock solid all summer, no movement what so ever. It will be a pain to get them out if I remove my platform for winter storage, but it's worth it, IMO.

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