I'm looking into building a SPAD plane for my Ryobi 31cc conversion and this brought up the use of the Coroplast building material. For those of you that don't know what that is it's basically 4mm thick corrugated plastic. Anyways, has anyone used this to make their powerpods? I seems to crash A LOT and the front ends of my powerpods are always getting mashed in. I was thinking that if I ran the Coroplast flutes lengthwise, I could get some decent rigidity. The plastic is probably a bit heavier than the foam board. However, I think the repairs I made to my mangled powerpods may equalize the difference .