Another cool product. Saw an exercise peddle bike like this yesterday and falls in line with a smiliar coolness level.
Pros:

• It's affordable
• Can be more energy efficient with pedals and get a great workout at the same time.
• Great for a day out on the lake or river and don't need a heavy duty boat

Cons:

• not sure how it would hold up against large waves or rough tide.

Overall. I really like this idea. Great to see affordable products that are environmentally friendly