I am a beginner scuba diver and free diver and would like some advice from a more expericed diver about diving with and iflatable raft. I would be putting an extra scuba tank in the raft. Would a raft from publix be good? or would it be good to get a raft that holds atleast 2 people? where would I be able to purchase a good raft at a resonable price ($60 or less)?