RE: Great Planes Escapade .40 ARF
I used one servo screw at the back of the canopy on the side of the plane (the back corner of the canopy).
In general servo screws are small so it doesn't look bad and I don't have to worry about my canopy coming off in flight.
I used tape for my first couple of flights because I was having difficulty getting a positive fit of my canopy on the fuse.