All the videos I saw on the Hobie they were in a lake. The Mirage drive lifts from inside the yak, not sure how heavy it would be to lift while sitting down.
The Native Slayer Propel 13 is real interesting looking yak, the fact that it will back up is really cool. From what I can find they run about $2500 for the basic model, the you can add the accessories you want. Thanks for the tip Plastic-worm from what I saw I like it better than the Hobie. According to Native The Alpine Shop in Kirkwood is a dealer but they are not listed on their web site. Might have to run by there next week and check.