bolts

Trying to figured out bulkheads for the bolt connection between crossbeams and floats . Floats are rather light foam/CFC . Bolts are M14-M20 . Question is how to spread bolt compression load into relatively light foam hull . Regards

My boat, a 1960 Rhodes Swiftsure 33, has external lead ballast that makes up about the forward 1/3 of the keel. It is secured with bronze bolts through the bottom of the hull and the nuts over these bolts were then glassed over by the factory/yard. This makes me think the yard never intended for...