re: Anyone ever stick welded aluminum? (Boat repair/patchwork)

If you do a good job of cleaning up the oxide layer and get the temps right brazed joints are really strong, lots of videos of people bending out aluminum before the joint gives. I wouldn't use it for structural stuff, but for hatch lids it's going to give you a good water tight bond and I would suspect it having no trouble with normal vibration of the boat.