RE: As per request 2
Actually, these small hulls don't need to be glassed in the normal sense (w/cloth). They don't suffer through the abuse a larger hull would simply due to their extremely light weight. Also, being a WOF hull, you don't have any voids like a frame constructed hull to puncture and take on water.
Before I switched to covering these small hulls w/monokote, all I did was give the entire hull a thinned down coat of epoxy or polyester resin. Sand it down w/220 grit and give it a shot of some fuelproof paint. The resin gives the balsa some added surface strength and a tougher surface as well.
A third option would be to give it a coat of wood sealer, then apply a couple good coats of a polyurethane varnish and top coat that with your color and clear coat.
You have many options available, even more than I put down here.