I totally agree with rodney. What little weight gain over film is worth it for the improved look of the fabric, plus its durability. If you need a good fuelproof clearcoat that won't yellow like polyurethane, use LustreKote. It's completely fuelproof, dries fast, and makes keeping the covering clean much easier. The only covering I like better than Solartex is Koverall, but then there's all the finish work that goes with it. I'll use Koverall for fine scale, but Solartex is what I use when I have to re-cover an ARF or for a sport scale bird. It takes latex paint very nicely, too.