Not at all an infrequent repair. You'll probably experience more stress in straightening the aluminum trim.
Use a coarse metal file (or a saber saw—using a wood blade) to roughen-up the seam's contact areas. Fill generously with a syringe containing THIXO epoxy and clamp evenly—as we did here:
I ran out of off-season to repair the nose on the Sunfish, so here we are. :eek: I attached some PICs now that I got the trim removed. Bad news is there is some damage (I bought it this way). The good news is it looks to be isolated to the flange area and the lower hull looks fully intact...