I've molded canopies in before when I used to use paint. They did fine.

But you need a air vent for your canopy and you need to keep your canopy shaded and out of the sun when not flying. It doesn't take much heat on a black canopy like the one in the link to melt an area of it.

Anymore I use the button head Great Planes #2 X 1/2" Sheet metal screws and R/C 56 on top of the Monocoat.

Enjoy,

Jim