Buck,

In the float tube, isn't your lower half typically suspended below the level of the water?

Some of that fast moving, shallow water might get a bit painful on the ol' keester..:-)

A bunch of friends and I tried to "raft" Piru Creek one day many, many mooms ago. It had all of a foot of water, and all we had were cheap Target brand 2 man rafts.

Bounced my bootie over so many rocks I swore never to do it again. (Some memories we would like to forget!)

Mike