Okay, you've now discovered that kayaks can go where other types of boats can't!

Two questions should come to mind:
(1) What if I get out there (or in there) and don't have the stamina to get back?
(2) What do I do with the paddle while I'm fishing, bird watching, or photographing?

An obvious solution comes to mind. Why not add a trolling motor?
Three problems arise:
(1) The trolling motor still requires one of your hands for control.
(2) A mounting bracket must be attached and the prop needs to be at least a prop diameter distance below the surface to avoid cavitation/ventilation. A 10" prop's blade will then reach 20" below the surface . . . defeating the idea that "kayaks can go where other boats can't".
(3) If the motor/prop is turned sideways when you turn on the power, the torque created will rotate the kayak and dump you in the water.

What we actually need is:
(1) an alternative to the propeller that is resistant to cavitation.
(2) an intuitive foot control system for speed and direction.

In January 2008 a new concept tied for first place in Int'l Design Competition at the London Boat Show. It featured a unique hull design, electric powered augers instead of props, and a foot control system based on differential steering. Any 7 year old can operate the watercraft without instruction. Once on-board, you never have to put down your camera, field glasses, or fishing rod.

You may see video of this concept at streamdancer(dot)com

Sending email to the designer will put you on an email list for updates.

A patent is pending and the designer is seeking an agreement with existing kayak manufacturers to produce the concept.

Look for Stream Dancers in kayak stores later this year.