http://www.torqeedo.com/us/hn/home.html

http://www.torqeedo.com/us/hn/products/travel.html

I bought a Torqeedo for the lean, mean, muskie chasing machine
(an 18 ft Grumman canoe) and it's a sweet piece of equipment.

I don't know diddly about pontoons but I can recommend the
Torqeedo without reservation (well, other than it's pricey).

--
Ken Fortenberry