Is SPADS a regional thing? It seems like it's more prevalent back east. Out here in California I have never seen a single power plane or sloper SPAD and I've been to over a dozen flying fields. But then again most of America thinks Californians are all a bunch of weirdos

By the way, we've been using coroplast on EPP slope soarers for awhile. The coroplast is mainly used for the tail surfaces or winglets and are indeed tough, but they have a tendency to develop permanent kinks along the grain. Toughness is definitely a virtue in the often hostile conditions on the slope but personally I'd rather give up some durability for a pretty airplane, especially a scale airplane. The modeling techniques of wood or composite construction is superior for this purpose.

But of course, if your primary goal is to fly and be able to goof around with no worries, then a SPAD is a cheap, fast way to do it. They're not for me, but to each their own.