thanks for the input guys, i figure there's no point in reinventing the wheel so i'll just let gree pull his boat to bits first before i do anything rash to my boat like reach for a powertool. as he has a nacra and a hobie it seems only fair!
i only mentioned the ports as some aussie owners talk about having 6 ports on their hulls...
have attached my contribution, a poorly taken shot of a 5.2 full fiberglass forward bulkhead that looks nothing like the cracking 5.8 bulkheads