Troller Motor

[thrasher]

I am looking for a self contained troller motor. I want to put it on my Hobie Cat 14 (sail boat), but I don't what to carry a car battery on the boat (they are very weight sensitive. I guess my question is does an item like that exist and where would I find one? The smaller the better. It will only be used to get me to shore if the wind dies and out of channels to windy areas so speed is not an issue.
Thanks for the help,
Thrasher
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