load them full of lead!!! that will stop them floating
the tape has always worked for me, but i use 90 mile an hour tape ( plumbers duct tape)
its cheaper than sailmakers mylar tape.
if the carpet too thick, we used some 1 inch webbing strap and glued that around the top and the bottomof the centre case .you should be able to find plenty of different thicknesses.

Brian Partridge
STINGRAY 580 "Fantasia"
A Class 585 "FHARKEN A"


YOU CAN'T POLISH A TURD
BUT YOU CAN ROLL IT IN GLITTER!!!!!