I think Phil has the right idea. I tack the midline sections of the canopy with 5 minute epoxy, for and aft. I then mix another lot of 30 minute epoxy , add some filler (milled glass fibre) so that it does not run and then put it in a 10 ml syringe and lay down a uniform bead of material around the periphery of the canopy frame. This is the most critical point of the whole process. If you put the right amount of adhesive then there is no excess to clean up and you can concentrate on positioning. Loads of time to work. I NEVER use zap. If you use the filler, the epoxy is less likely to creep and move into a visible section of the canopy glass. You can even tint it black with epoxy tint if you like.

Hope that helps.

Craig.