Awww jeez, don't do that!!!

The canopy glue is so very easy to do a good job. If the canopy fits good enough that screws hold it flat, then canopy glue would take about a minute to glue and a minute to wipe the excess with a wet paper towel. The first ARF I did had holes predrilled in the canopy for screws. I used them to position and hold the canopy while the glue dried. It worked like a charm.

Screws let crud into the canopy. No big deal on an electric, but ugly on a glowfuel. They weaken the canopy, not strengthen it. And they don't allow the canopy to stiffen the overall structure. A glued canopy actually adds strength to the fuselage. Not a big deal, but a glued canopy is also lots stronger itself. I can turn my airplanes over and rest them on the canopy and not worry about the canopy buckling or the screws causing rips. And no crud under the "glass".

And with the new canopy glue and a wet paper towel, almost anybody can do a professional looking job.