Aircraft used for Parachute operation have a big red handle to jettison the door for the pilot . In an emergency the pilot can pull the handle to allow him to get out quickly if the aircraft is in a lose of control situation from impact damage from parachute's.
At least one such door should be on a float plane as this will allow easier egress if the aircraft becomes inverted on the water .
The underwater egress course teaches how to "locate" your nearest exit in an emergency.
Count the seats to the exit and now close your eyes and imagine how you would get out in a dark smoke filled environment. Easy to get out if you are ready for the fight .
I escaped a fire on a lifting barge using that technique. Made one left turn one right turn and two flights of stairs on one breath without panic or breathing any of the smoke .
A professional video demonstration is also shown on some oil rig flights to remind passengers how to survive emergencies .
The big red handle door mod has been done on many aircraft and would not cost that much or add much to maintenance on one door.
Although the pilot could only use the big red handle, if he remembers to use his shoulder harness .