I used to have a little 6 hp motor just like that one and I woulda swore it woulda took me from Ga to California if the creek ran that far. Ha! I was young and ran a few jon boats that leaked some. I had a little tig welding done on them and the small holes I used JB Weld. My boats would still leak a little but nothing enough to get your feet wet over. Back in them days I did alot of overnight trips chasing catfish using jugs and I usually fished every Friday night...rain or not. I sorta liked those rainy nights. I knew there wouldnt be anybody else on the lake fishing my jugs.

I'd say try pulling that deck out and empty out everything you can to get to the metal, tie the back of the boat to a tree and slide that trailer right out from under 'er. Best bet would be to do this in the grass. You dont want any more holes. See what you are working with and go from there. Good luck with your project boat!