expanding foam

In the long term you will save time/money/heartache by having that done professionally if you don't feel confident to do it properly yuorself. You need to ideally clean all the failed bonding pase off the top on the post and key both the post and the underside of the floor to enable it to stick.

What to glue it with depends on the boat, epoxy is actually unlikely to cause a problem there on a polyester boat, but it still may be better to use a proper polyester bonding paste.

Accessibility wise i think the only way you're going to get to that properly is to cut a hole in the floor or the botom of the boat. If you don't you're unlikely to get enough of a key for it to stick properly and you'll have an awful job of trying to do it again later.

Edited by Paramedic

Originally posted by womble12345 it is far easier to get the repair to the hole they cut in the bottom of the boat rather than trying to re-create the mottled grippy bit on the cockpit floor.

IMHO going through the deck provides a better result than unnecessarily disturbing the more important outer skin fibres and maybe creating hard spots in the core with filler. As for the cosmetics, it completely depends how the deck is finished, and I don't know what boat it is to comment. If its painted or pro gripped then you'll never see the join on the deck.

Edited by JimC

http://www.diyfaq.org.uk/humour.html#foam

i am still interested in what the boat was in the first place.