For smaller boats you want a motor with infinately adjustable speeds, like Minn Kota with Maximizer, not only will it let you go as slow as you want, but at those slow speeds you'll get at least 5 times the battery life. Motorguide has a similar product, but I'm not sure of their name for the technology which is Pulse Width Modulation (PWM)


an older Minn Kota 65mx would be perfect for you, they go for less than $100 on ebay all the time. It's 28lbs thrust and you can slow it down to the point that you could actually count the prop revolutions..

You may also be able to find an older Maximizer add-on unit that could be used with you existing motor and would give you a wired remote for speed adjustments. they show up on ebay once in a while and usually go for around $70-80

Jon

[This message has been edited by Shaggy (edited 07 March 2006).]