I do fiberglass and other composite repairs on USAF aircraft for a living (well that is a part of my job). what we do is take some PVA (polyvinyl alcohol) which is just like a heavy plastic saran wrap type sheet. the resin does not attack it and it can stand the heat that we use to heat cure our repairs, but any tough plastic would work as long as the resin does not attack it. anyway, we put the cloth on one layer, pour on your resin and cover it with a second layer of PVA. you can then squeegee the resin into the cloth for perfect saturation of the cloth and also control the amount of resin you leave in the cloth by using the squeegee to push the extra resin to the edges and out of your cloth. you can also use some scissors to cut your glass to any shape you like at this point with no mess and no fraying of the edges of the glass cloth. then to apply, you just brush on a thin coating of resin on your part, peel one or both layers of the plastic off the saturated cloth and lay your glass down. you can even leave the plastic on the top of the glass to work it onto your part and then peel it. no drips, no mess. you can use any method you like to work out any bubbles that you might get, but if you start at one edge and kinda work it down smoothly and evenly, you won't have any air to work out of it. we usually put vac and heat to the repair at this point, but that is not absolutely necessary. nice clean easy method with really consistent results.

just thought i would throw this out there.