I just came across this thread and figured I should join. Up here in the frozen north we have lots of building time and I have just finished my 1/4 scale Sig Cub up to the paint part. I'm waiting for it to warm up so I can do a spray job in the garage. It's a full span Cub which I'm going to rig for glider air tow. Power is going to be an inverted Saito 180. I'm really happy with the plane which I picked up as a partially completed project at a local auction. It required some structural construction and covering which is completed in Solartex. There's lots of good information in this thread.
I'll post some pictures when I can get it outside.
Peter