I've moved on to 'plan E' for attaching canopies.

I now use Fourmost large canopy trim which has a groove and slides into the canopy base. I use RC-56/560 to glue this to the canopy base before gluing the canopy to the plane.

After the trim has dried, the canopy now has a nice 1/8" or more footprint instead of trying to glue a 1/16" piece of plastic using glue that wants to run. The trim also forms itself to the fuse, regardless of the many compound curves. Before, no matter how carefully I cut the canopy, there would be voids where it didn't contact the fuse, this eliminates that.

I relieve part of the covering to allow the rubber trim to mate to wood and then glue the canopy to the plane with RC-56/560.

I still hate putting on canopies, but this technique isn't so frustrating for me and it turns out OK.