I got my wife to reach down into there to put the bolt into place on my Avid Flyer, her arms are way smaller than mine. Used a 3/8" ratchet with 2 long extentions to reach the bolt and hold it from turning. When I covered my Kitfox 4, I made a trap door on the side of the fuselage next to the bolt. I fiberglassed in a small aluminum tube at the top to wrap the fabric around. JImChuk