I'm interested in skinning shapes that requiring 2 or more pieces of fabric.

Hi!
I don't really get idea of using hair spray. I think you mean that you want to create clean cut as it is in profinish fabric, am I right?I have never done such a thing before, so I can't tell you whether it works or not. You can use base coat but I use normal epoxy resin or gel or spray can glue. I recommend using twill waeve as it is better for curvy places. Pro finish will allow you to have better cuts but it is stiffer so it takes the shape harder than standard twill. My own idea is to use gelcoat instead of resin to cover the fabric, because it will be more uv stable.
Bye
Wojtek from Poland

~~~Everytime I hear sound of demoulding part I have eargasm~~~

when I skinned the 2 plane curved roof of my car I put masking tape along the split line then fitted the carbon up to it and cut carefully with it glued in place... I then repeated with the other section overlapping and cutting carefully to the other sheet already on the panel. the result was a pretty good V weave.