I have a 2017 Tandem Mirage Island. I store it in a hangar at a local airport, And while pulling it out to go sail, I had a brain-lock, and I didn't pull it out quite far enough to clear the hanger door before lowering the door. The door is a 50 ft. by 20 ft. bifold that must weigh at least 3 or 4 tons. Anyway, I rolled the trailer up to my car, hitched it all up, and hit the button to lower the door. I used to fly out of this airport, and had another flying buddy with me to go sail. We naturally started blabbing about flying, and didn't notice the door coming down on the top of the TMI about a foot forward of the rudder gudgeon. I noticed this when the bottom of the stern was about 4 or 5 inches from contacting the hangar floor. The TMI actually BENT right at the rear of the rear trailer cradle without a sound! I glanced over, saw what happened, hit the STOP button, then raised the door. I got lucky, and it was a really warm day, and the hull and right ama that got bent returned to probably 99% of their original shape/alignment. Their is no visible damage to the top of the hull or ama. Only visible damage is where the hull and ama bent. Minor bulge/dimples. I couldn't find any cracks, and hull and ama have no leaks. Spent the whole day on the water with no issues. Only residual issue is the rear mirage drive now makes an audible "clunk" when the pedals go to full travel. Apparently, I must've knocked it out of geometry just enough so the drive fins contact the hull at full travel. My question is, have any of you had an experience like this, and if so, is their a possible fix to return the hull to the correct alignment?