I've never used Koverall, but I have used Super Coverite and it's great stuff, just a little on the heavy side. Not enough to make the plane fly bad, just a few oz more then some of the other coverings. You also have to fill it and paint it, but then we were mostly doing that back then anyway. MonoKote was kind of new and not everyone was using it. We still did the old silk and dope trick quite a bit back then and I had more then one done up like that. If you are interested in using Koverall, go for it. If you have to use the Balrite to put it on, litely and the first coat down a little just to get the fuzz off the balsa and then put another coat on. Works for me using another covering and it sticks great.

Ed