Stabond should work, just make sure the prep's good and done with MEK. You should have all kinds of instructions to follow. Send Zbaird a PM as he's a good rapair man and knows a lot more about this stuff than I do. Also, while there are a lot of rafters here on the Buzz, as a newbie rafter you may want reach more rafters with questions - check out the Grand Canyon Private Boaters list (GCPBA - dot-org), Utahrafters email list, or raftzone on boatertalk-dot-com.
Good luck and welcome to the inflatable world!
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse