Am I better off glassing the wheel pants or using silk span  They are going on a wing gear plane used on grass.Should I drill the hole for the gear before I glass/silkspan or after Not real sure how to hide the gear since I want to have the wheels removable. I figured I'd use nylon gear clips and screw to the pants. I am going to make up a set of LG with gear doors also.

For balsa wheel pants, light fiberglass is the way to go.  Apply using "Z-poxy", it sands easy-light application to apply the fiberglass, sand lightly, a second coat for filler and strength. I like to drill and fit the piece before the fiberglass is applied. Sig 1/2 ounce fiberglass or K&N 3/4ounce fiberglass works well. Don't worry about doing it all with one piece (although you can) - just one piece at a time, let dry, then apply the second. Also don't worry about the edges. After the epoxy dries a few swipes with 230 grit sandpaper will trim the excess fiberglass  off cleanly.

I've got the glass on one of them, what a mess. Thank GOD for Isopropyl Alcohol .