Re: Welded hull or Reevits
Generally speaking there's not much difference in the class of boat your talking about. As for maintenance in your backyard, either one is about the same. Either two guy's bucking reevits or one guy with a Mig Welder and a spool gun. Both are pretty easy and both can be done in your backyard.
When you change things up and get into the heavy aluminum boat class, JetCraft, North River, Duckworth, etc., they are all welded.
Do welds crack? Bad welds do but not good welds. If you take a hit on a weld or on a riveted joint your going to have to deal with it either way. My JetCraft comes with a lifetime hull warranty so you can take that for what it's worth. Duckworth, North River, Harber Craft (also makes JetCraft), all offer similar warranties.
If you're buying used you might be able to get more comfortable if you can find out what kind of warranty the boat had originally. It would give you a feeling for how the manufacturer felt about the boat they built.