Did a forum search and didn't find a specific answer, so...
As part of my rehab of #10721, my attention is now focused upon the mainsheet swivel block, which appears to be the original equipment mid-boom sheeting hardware. I'd like to replace it with a better stand-up racheting block & swivel cam cleat, which means removing the original piece in its entirety. I'm just curious though - how is this fastened into the CB trunk top? I can see the tops of the four screws - are they simply self-tapped into fiberglass (hard to believe that is strong enough given the tension loads)? Or is there a more elaborate answer, like machine screws tapped into an aluminum plate glassed into the trunk top?
If my replacement swivel block base has a different bolt pattern, what would be the recommended way to fasten it with sufficient strength?
Same question applies to the future cam cleats that I would like to attach to the CB trunk top to facilitate improved jib sheet handling - what to fasten with? Speaking of which, I'm considering cam cleats on swivel bases rather than fixed. Anyone done that?
Thanks all!