OK, some other forums I am on have a thread like this, and it seems to be interesting(250+ pages). You can simply just say what you did to your bike for the that day.
So my quad gets abused weekly if not daily. My seat wore a hole through the aluminum subframe. I decided to give the simple solutions aluminum welding rods a shot. The stuff seems to work great. You can see in the pictures I even grinded on the stuff. It was tough stuff. It may have even grinded harder than normal aluminum.
hole
Patch for the hole
Welding equipment
Welded and ground