Clean, I have looked at the spads and was just about to dive into them at one time. I went around town and picked up all the election signs the day after election one year. I never did get one built though. At that time I think they were still a bit heavier than a foam wing could be built. Now with the 2mm stuff, spads can be really light and I may still give them a try, but right now I am sitting on 20 sheets of 2' x 2'x 8' foam in the garage I got for a dollar a sheet and have a foam cutter already made. The templates only take me about 15 minutes to make ( I only make the airfoil template and turn the foam core over to cut the other side), and I am still working on other things besides pvc for the fuse. I am thinking of making the next one on rails like some of the spads and the battle axe.