Silkspan over Polyspan?

I kinda' like Polyspan for covering wings; the sport-stunters I build and fly can get pretty beat up (holes poked it) if the covering is just plain Silkspan. There is a problem or two here, though -- the main one being that you have a mess on your hands if you happen to sand into the Polyspan: it gets fuzzy, and it is probably easier to re-cover a section than to fix it.

So ... has anyone tried to cover the Polyspan with Silkspan to prevent this kind of annoyance? Perhaps like: 1) cover w/ Polyspan and shrink it, 2) spray on a couple of thin coats of clear dope, 3) using thin clear dope, cover Polyspan with wet Silkspan, 4) a few more sprayed coats of clear dope, and 5) proceed as usual as if only Silkspan had been used.

Too heavy? Use two layers of Silkspan instead? Right idea, but wrong technique? Bad idea? Monocote the wings instead?

I built one plane with polyspan as the primary covering, then covered the polyspan with light silkspan. The silkspan will fill the polyspan much faster and easier than with dope alone. It is the same technique as covering bare wood with silkspan to fill in the grain.

Generally, I was pleased with the result. The finish was better than if I had used dope alone, and I do not think there was any weight penalty. Final weight was probably no greater than the polyspan with a bunch of dope.

Since the polyspan takes many coats of dope before sanding in order to prevent fuzzing, this double covering seems to work OK.

I am now covering another plane with polyspan, but instead of double covering with silkspan, I may try to fill the polyspan with a zinc stearate and clear dope mix. I experimented a bit with this, and the zinc stearate fills the polyspan pretty well. However, I do not know if the polyspan will fuzz up if I do not have enough clear on it first.

Sounds good, but, and not to be a smarty butt here, but I know several guys that did not know that Polyspan has an up side and a bottom side. The up side is shiny and the bottom side is dull and will fuzz like crazy if you sand it, dope or not. Be sure to put the shiney side up. If you get the Polyspan from Tom Morris, he marks the up side with little green peel off dots. No mistakes that way. From other sources, who knows?
I would rather cover it with Japanese tissue. It fills quicker than silkspan and much lighter.

Even the smooth, shiny side of polyspan will fuzz up if you do not have enough dope on it before sanding. I make doubly sure that the shiny side is up. Nevertheless, it will fuzz up unless there are 5-6 coats of dope (preferably more)on it before sanding.