Canopy glue??
I agree with Bill, just be sure to have the canopy vented so pressure does not build up while plane sets in the sun or it may pop off. I leave a small area not glued or drill a small hole into the fuselage.
I cut a small "V" in the application nozzle and lay the edge of the canopy in the "V"as I apply glue this results in a Small bead of glue on both sides of the canopy as well as the bottom edge and I have never lost a canopy.
Trim tape can be used to cover any thing less than a perfect application.