I use the Z-poxy thinned about 60:40 with alcohol, apllied with abruch starting at the center moving out to the edges. After I let it sit for a few minutes, I blot the surface with a paper towel careful not to lift the cloth, if you rub lightly with the paper towel from the center outwards it will make sure you have removed any "bubbles" and will also dry the cloth to a point where you can almost touch it and it feels dry. I always thought the idea was to bind the cloth to the underlying wood, which gives it strength and also prevent the cloth from coming up. I have used this method successfully and it very easy. The Z-poxy is ready to sand in 18-24 hours and there is no need for a second coat, only filler (red putty thined with acetone) brushed on and sanded and you are ready for primer.
I have not tried the West systems but hear it is just as good. For me the paper towel works wonders for keeping it light and easy to sand.
Tommy