Hmm, I never really thought of an inflatable raft as a BOB item. In any case, I wouldn't want to try and cross the Delaware in a raft that would fit in a BOB anyways. Might as well just BOB one of the $1.99 air mattresses as you'd get just as wet and probably fare better.

If you can follow the river upstream, you will at least know fairly well where you are at any given time.