motor on kayak?

[seaslug]

Thrust figures on electrics are maximum thrust.

You can run any of them almost dead slow. The current usage is directly proportional to the thrust being used (low thrust = longer battery life).

I would worry a bit about the weight of the motor and having a mount that will take full thrust in case you use it.

[greyloon]

I have a 30 year old sears trolling motor of 6 lbs thrust. For a kayak, a 30 lb works well. But, most rudder mounts are too flimsy for a trolling motor. You get lots of vibration. The mount needs to have one member go across the width or the kayak if side mounting, more difficult on most kayaks is rear mounting, the mount has to be custom made. With a side mount, a simple mount can be made from 2x lumber. Most likely, you'll be drilling holes in the kayak for the mount. Unlike a canoe, you don't have gunwales to clamp on to. With a LL, I wouldn't want to mess with it. Find an older kayak maybe one that's a barge to paddle and play with it. You'll most likely go back to paddling your LL unless you have shoulder or back problems. Be sure if you do it to buy a deep cycle battery thats sealed, don't want battery acid floating around in your foot or tank well.