Difficult to explain but I like the Yellow F15 hatch method.

Two long piano wires, through tubes that start somewhere convienent near the cockpit with a small right angle bend to pull on. The wire and tube is through the fuselage into a tube in the hatch to the back of the hatch and out into the rear fuselage tube. I did the same on an F16 and used poly tabs as well on the side to ensure alignment

works 100%

Hope this make sense, if not I will take some pictures

Ian