Originally Posted by thejonesey
Well I have two seats in now and plan to put in another two on a grp box soon. Any suggestions on how the box should be attached to the floor please? Ideally it should be bolted but I don't fancy cutting holes in the deck so I can get at the nuts.
Search the forum there's been lots of discussions about how best to fix seats - the main solutions are:
(1) Self tapping screws (lots of them) AND
sikaflex. Make sure you (a) use stainless self tappers and don't overtighted to break the 'cut' thread (b) use proper marine grade sikaflex with an adhesive element not just some cheap bathroom sealer. This is a very common approach used by builders, because its cheap and easy.
(2) Glass them in. Probably considered the best way - but not ideal for you as your configuration becomes permanent and you are looking to do something a bit unconventional with layout. It requires a wee bit more skill than the first option especially to get a neat/pretty looking job - and ideally a warm environment.
(3) Bolt them in. As you've realised you need either pre-existing bolts glassed in to the deck or access to under the deck. Not sure if its feasible to get that far forward via the flooding hull drain on the transom? but otherwise you'd have to fit a hatch (within the locker?). Search top-hats on the forum and you might find more convoluted ways of adding hardware to the deck to bolt on to - not sure its worth it unless you want the flexibility to swap seats, bottle racks etc regularly.