Since the voices in my head have got louder regarding the boats weight, i have decided to go the foam composite route for the rest of the interior via the excellent firm Marineware and their line of PVC products from Gurit.
Marineware (along with a host of others, see 'links' on my front page) have been very good to me over the years whether buying winches off them at a boat show or visiting their offices in Southampton, i should point out i'm nothing to do with them other than a happy customer but believe in 'bigging-up' companies who are offer great products, advice and prices.
You may remember I used them to make the keel webs as well as their Saba 750XL sealant to fasten the keels on. As i'm working in Southampton i dropped into the office to get a price for the foam and after a friendly catch-up with Adrian Layton walked away with five very reasonably-priced sheets of structural foam.
The idea is i will use this foam and then either sheath with a thin veil cloth or 1.0mm ply to give an even surface to finish to such is my paranoia that the boat is massively overweight based on recent calcs.
My worries are based on the materials (epoxy and cloth) used and at present i've calculated the boat weighs somehere around the 2800 kg mark and thats with nothing in it so there is a practical reason to stepping a larger rig after all.
This may all seem overkill (as usual) but i've a recurring dream of launch day where the boats dropped in the and sits at an alarming angle as if to be taking on water. At present most of the weight is on the starboard side; tanks and galley, so to counter this i'll fit a bank of batteries that'd make an electric car blush, my theory being if i've got to add lead to compensate i'd rather it did something like generate electricity.