Backed them with one inch fender washers.
This cleat is for a clipping on the tender painter when at anchor, and also we clip our mushroom onto the stern to stop swinging.
Backside view

And mounting view under rear berth - the dripping 5200 marks the new holes of course

Only casualty was while the Admiral was tightening the bolts on the outside, the socket slipped off and popped her in the eye, giving her a shiner...

