Re the closed canopy - when working in a Lightning cockpit one had to use the manual pump to be able to operate the opening hydraulic jack, and then fit the canopy open lock. the canopy would slowly close on its own otherwise, leaving ones 'friends' outside gesturing 'can we do anything to help you', or go off for a coffee break. Having opened the canopy using the residual pressure in the system, it wouldn't have stayed open for log if the fuselage was upright.