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The answer for myself to your question is unfortunatly no. I have never used or seen one used of the wrist or hand held FF units in my travels. In kayaks most of us that want a FF use the lower to medium cost ones and run them off a gel-cell and mount the puck inside the hull with an adhesive or at least a container for water. On float tubes, we usually run the lower cost units that are good enough to give us depth and bottom structure readings. Sorry about that.
Perry
