make sure mould is tip top, wack on a load of release agent, gelcoat, layup fabric and resin, glass in stringers and ribs and transom etc, leave to cure, whip it out. Then if you have a seperate deck mould, do the same and join the two together with ducktape (perhaps). If you don't have a seperate deck mould, glass in a plywood deck and flo coat it all (also known as gel wash, gel coat with a wax additive that allows it to cure in the presence of air).
I reckon thats about it...in simple terms anyway. Ask stevetheboat, he knows what he's talking about unlike me.
check out www.cfsnet.co.uk
and request a catalogue....loads of info in there.
Hope that helps!