CMC 35 install ?

[thill]

I agree with LDUBS, you should take it off and fix ASAP. The longer it sits, the more issues it may have.

Use a drill or dremel and dimple the back of the brackets where the bolt heads are, if the material is not too thin. Otherwise, a Starboard spacer might be a good solution, just make sure to cut it cleanly so that it doesn't crack over time.

Starboard is tough and won't compress. It is NOT soft. But I personally prefer the high density materials like cutting board stock. Less likely to crack, compared to starboard, but they are a pain to seal, because not a lot of stuff will stick permanently to them. So your starboard may be the best solution.

 

[LDUBS]

You won't be compressing starboard. It would work fine for a spacer. I would make sure the 1/2 starboard is the same size or bigger than the CMC transom rails.

Oops - I was typing while @thill was posting.

 

[headduck]

I'll make a base plate spacer and then put channels where the screws are to help with a little bit of draining behind the plate.

 

[headduck]

I'll make a base plate spacer and then put channels where the screws are to help with a little bit of draining behind the plate.

This is much better.

Y'all aren't good for my paranoia.

Thank you.

 

[LDUBS]

Nicely done! That last pic really highlights the problem you were dealing with.

 

[thill]

GREAT JOB.
I like your channel idea. Trapped water is always bad.