I weld at work with a MiG all day, but I would suggest you get it welded with someone who can TiG (Tungsten inert gas). If you've ever seen the show "American Chopper" you have seen a TiG welder in action. TiG is excellent for Aluminum, and yes.....it is very tricky. But if it's done properly, you won't even be able to tell it was repaired.