Ditto to Anthony's post. I re-covered a Great Planes Dr-1 with Solartex and had the same situation. What I did was what Anthony suggested, iron the material to the top of the trailing edge first. You should leave as much material overhanging as possible in order to have something to pull on. I did the bottom surface first, pulled the material over the back edge of the T.E at the "points", and then made cuts at 1/4, 1/2, and 3/4 way between points that extended JUST SHORT OF the edge, pulled as I was heating the material, and ironed it down, I trimmed the bottom material at the top edge of the T.E. When I applied the top surface in the same way, I made cuts at 1/3 and 2/3 distance between points and ironed it down while pulling, and then trimmed it at the bottom of the T.E. You get a cover that follows the scallop perfectly, and whatever small cuts extended to the rear of the T.E. are offset from each other so there is no bare wood showing. My Solartex cover stayed perfectly tight until it was, shall we say, removed, in a sudden halt at the end of a flat spin after a collision with a D-VIII during one of our warbird fly-ins. D-VIII survived, BTW.