I don't have a ODC. I have a Fish Cat#4 and Fat Cat, but the finder could probably be rigged about the same if you use a skimmer transducer. Google up "float tube forum" and one of the top will be Big Fish Tackle's float tube forum. Lost of finder mounting suggestions.
When you get the info you need, return here and share the results of your catch please. ole Mike
I am on that board also, and have asked the same question. I am eagerly awaiting the results from some of those members. I have researched lots of set-up's and I am formulating a plan that will involve copious amounts of PVC, and a block of wood or plastic junction box. Not sure I need to pump up the tube and pull a Rodain over it for a minute with a PBR in hand!