The Windex method works very well. I have covered large areas with multiple layers of monokote with no lifting of the edges after several seasons of flying. You need to make sure the Windex is completely dry before you go over it with the warm iron otherwise you still will get little bubbles. The monokote trim solvent works ok but it is difficult to get the right amount. Too much will dissolve the color layer and cause a blotchy appearance. It is also hard to keep air bubbles from being trapped under large pieces.