Most of the "old timers" are still using silkspan and dope because that's what they've always used and it still works great. Probably still the lightest method of covering. But a lot of guys. including me, that have come back to C/L after years of R/C are using the newer type of coverings. Some use the plastic, but many are using Polyspan (a heat shrink polyester without a weave) or even Koverall. I have applied the polyesters with ModPodge or even water based Minwax polycrylic. The only way I've been able to get that to work is by applying the covering to the frame while the solution is still wet, and then paint thru it before the base coat dries. Kind of a pain for large pieces. It will not heat activate to adhere. That's about your only choice if your unable to use laquer based products such as BalsaRite or StixIt. Give it a try on a test piece. It will work.

Paul