I wonder how much drag would be introduced by one of those 'drop-in the stream' hydro-gens? IIRC, they produce some tremendous amounts of power without costing huge dollars or taking up a lot of space.
A couple of fins ta stabilize and a tow cable added to the wiring set and just throw it over the stern!
Nah! Mebbe a faired stem and clamp arrangement to lower it off the stern quarter?
Would it be worth it to have the amperage vs the loss of a few tenths of a knot in cruising speed?
OK.. I see Aquair has that towed thang down already
Howzabout a MInn-Kota trailed over the side and reversed to generate??