Just thought I would show what I did to my Super Sportster 60 to gain access to the fuel tank and battery compartment. Being that I had to mount the battery forward near the firewall, and the model was already built and covered, I had to cut a portion of the top section of the nose out. I used a plastic hinge (same as my control surface hinges) and very small nails with epoxy to hold it all together. I did my cutting inward at an angle so there is a cross section like \_/. I may have problems with monokote pealing in the wind, but I have yet to fly it to find out. As long as your hatch opens against the airflow you should do o.k. I don't know if this is what your looking for, just my .02 [8D]