Re: leaking boat
Slightly over drill the rivet hole. And use the correct diameter rivet for the new larger hole. Dip the rivet in 3M 5200 before you cinch it tight to the hull.
Aluminum solid rivet that must be bucked or an aluminum closed end blind rivet.
Once the rivets are installed, you can coat all the exposed seams & rivets w/ Coat-it or Gluvit to help prevent future leaks