I've covered 1 plane and 3 other wings this year with the polyfiber system. Used a Harbor Freight spray gun for all the painting. It works good. I did do all the painting flat however. That helps to avoid runs. I would say for advice, "FOLLOW THE BOOK" the manual is your friend and your best guide. One other bit of advice I will pass along is don't be cheap with the brushed on coat of poly brush. If you get to light on it, especially where you are going over a surface underneath the fabric, make sure you fill the weave with the poly brush. Other wise you can get pin holes real easy. On the Avid Flyer I recovered, it uses an aluminum sheet over the false ribs and also the fabric sticks down onto the fuel tanks. Both are real good places to get pinholes if you go light on the poly brush. And the pin holes are a devil to deal with and get rid of. Don't ask me how I know! ;-) JImChuk