One of the easiest ways to seal the hinge line is with a small bead of silicon mastic on the underside of the surface, I only seal the elevator and the ailerons as the rudder always seems to be effective wheather sealed or not.

I put the latch on the canopy with the handle sticking up through the perspex and bent over at right angles, this allows it to be used as a means of getting the canopy off, I also took out one of the magnets at the back as with the latch it is superfluous. Post 149 on page 6 shows the catch.

Mike