UPDATE: 05/31/2007
I'm redoing the stern hull and stern skirt. I'll be replacing the useless on water "anti-drag" flap I called "the cape" because it caused a huge water wake from all the surface drag. It worked just fine on ice, ice is so forgiving with hovercraft.
I'll be trying some balloon fabric for the rear/sten skirt. If it works out I'll put it on the whole craft. The new fabric weighs about 1/10 of the heavy yellow material and I picked up six pieces which if laid end to end would be four foot wide by 60 foot long, more than enough to do the whole craft.
I have less than three weeks to finish this and test it, and I still have to put the gas tank back in the tow vehicle (1990 Geo Tracker).
I'll be busy for a while.