This is roughly what I was looking to do, but I don't have a seat to use as a mold. It will take me some time to determine the best negative mold.

Thanks for the ideas, Mark

> I did it off a Valley Pintail seat. Instead of glass, make your negative
> mold with plaster of paris. I covered the seat with plastic wrap. Use
> several pieces instead of one to form the pockets with out air pockets.
> Fill it with plaster of paris. Once removed, I burned off any adheared
> pices of plastic with a propane tourch. Sand it and fill any voids with
> wall joint compound. Sand it,then coat it with epoxy.

> Wax it and glass it. The surprising thing is how much glass it takes to
> get a stiff substrate. I use 1 layer of 6 oz. A layer or two of scraps - 6
> oz. Then a layer of roving. Then about 3 more layers of scraps of 6 oz. I
> add a little copy toner into the mix to make it black. I use a fast epoxy
> and do this in the sun. In about two hours I can remove it from the mold
> while it has a lot of flexability. Once it hardens like a rock, it can be
> stubborn to get off the mold.

> For a release agent, I use a layer of Auto wax and buff it. Then a thick
> layer of Auto Wax that I don't buff. You could buy real mold release, but
> they're kink of expensive. You can also use wax paper laid on the mold in
> pieces to comform to the shape. Some people use melted parafin painted on.
> I tried this but found it gets lumpy.

> Once it's done you can smooth it out with epoxy putty.