Right.... lets get into it !

Someone sent me a PM asking for a few more details on the process.... I hope this helps

I usually do a good test fit prior to fitting the ply, once this is done I then work on the under side of the deck and this will be all I see for the next 15mins or so. Writing the end that the ply goes to will save an embarrassing back-to-front fit, so always make the note as to which way it goes.
A light sand with some ~180grit paper will cut away any strands of timber on the ply, it also 'roughs-up' the surface.... I've also sanded the stringers / case slots / and anywhere else the new deck will contact

resin mixed, cloth cut to size.... ready to go !!