In a moment of extreme stupidity while hungover, I put my small torch down on my tramp without turning it off and it melted a nice 1.5 inch hole in my tramp.
The good thing about a hole like this, and your cigarette hole, is the edges are welded together and shouldnt fray. You have at least the rest of the season before you should have it patched. A sailmaker should be able to fix it easily once its off the boat.
I wouldnt worry about it.
Bill