Cooling in airplanes have also been an issue for me, it gets hot in CO and especially with the big plexi bubble I think it's going to get warm. I wanted to add a second air intake for the cabin.
Yesterday I traced the shape of the cutout from one wing skin to the other. Today I removed the material from the skin. I started by drilling some guide holes with a #30, then I got out my step drill and cut large holes. I then got out the nibbler and got a rough opening, I then went back with teh nibbler for the a close cut. NextI got out a file and cleaned and smoothed the edges. Both wing skins are now ready to fit the intakes....which I need to order.