Finally have just launched the steel boat went like a dream the total cost is around $500 for boat and trailer. I can stand on the back corner and the thing don't try to tip you in the water it is really stable. I would recommend building in steel using 1.2 steel plate, the cabin is square tube covered in alloy sheet and glued in with Sega flex. I wouldn't use this glue again as it let go and the cabin vibrates... cheers Stewart
