It just takes some practice Dan, getting the iron temp set correctly as well... once you get the hang of it, you can produce some very nice results... I haven't used monokote in years... from what I understand, there has been some changes in the product, but when I first used monokote back a few years, it was surprising how well it went on... patching can be challenging, its all about using the tip of the iron and sealing the perimeter first, keeping as much of the slack out as you go, and then shrink with the heat of the iron and ovoid staying in one place for too long... I had good experience with the iron on 21st century fabric as well... and my recent experience with solartex went just as well, very nice covering.
John M,