Wow Gee, OK, let me answer your questions. For how long will it take, well, I guess that depends on who you have doing it. Someone as highly skilled as you who is able to post pics directly from their phone, probably no more than a couple hours to drop the toon off. Now as for fixing the dent, well we all gave you a bunch of different ideas, but you seemed to already know the answer, so I guess there was no point in asking. It all depends on what your neighbor wants to do. It seems as though none of us have had to fix a dent in one yet, which is why we were all just giving opinions. I suppose since you obviously haven't done it either, than you are just as 'dumb' as we are on the subject. So, put the boat deck up on blocks of some sort, use the search bar, it was all covered in people asking about sharkhide application and polishing, then get out your trusty crescent wrench or spring for a socket set and unbolt all of the bolts. The toon will then come off. probably want to put a couple of jacks (maybe the motorcycle types) under the toon to support the weight. Then to replace, well, do the opposite.There, question answered. Hope that helps!
Edit, Gee, not sure if your previous comment was meant in a joking way, or in a "I'm better than all of you" sort of attitude. I hope it wasn't the latter way. I admit that is how I originally took it. I know I enjoy your pictures and views on things, but if it was a cocky comment, then I for one don't appreciate it. This is a great site because we all check our attitudes at the door, and just enjoy each others comments / questions, and I believe we all TRY to answer to the best of our abilities. If your comment was in a joking manner, then I guess this edit is moot, which is how I hope it was.