I purchased the Sawyer MG-X for my 19' Willie drift boat last year and they work ok.

This year I bought a 17' Willie and purchased the 9'4" Cataracs /magumn blades and they are much better IMHO. Not sure if they float but I would bet they do.

I bought the oars at Fish Rite Boats. Willie doesn't handle the Cataracs. I've got a list of dealers along the I-5 route in Oregon if you are interested. Around $285.00 or so.