Yes. I originally used white glue and water on foam combat ships back before we had plastic covering. I covered the foam with tissue and used white glue and water to shrink and seal it. The down side with the water is that it would just bead up on the foam. It would work, but not very well. When I started using the alcohol it went on like dope. Really smooth and no beading up. I still use it today instead of the dope since I'm always using foam now days.
Bob,
Since rubbing alcohol is mostly water (unless you get the more expensive kind), have you tried thinning with just water? Does the alcohol make it sandable?
George