I have a one man "sea eagle 285fpb" (small pontoon boat) I can fish all day with a series 24 battery. I am starting to fish a pond that I have to hike into and am looking for a battery as light as possible to run my mini-kota 55 for 2 to 3 hours. Any suggestions ???????

The next smaller size deep cycle battery below a Group 24 is a Group 22NF. Smallest would be a Group U1 - they're made for motorized wheel chairs.

Unless you pay some big bucks and get a Lithium, which would also require a special charger, AGM's are about as light as they come, and AGM's are not inexpensive.

Here's Deka's spec sheet on their AGM deep cycle

http://www.eastpennmanufacturing.com/wp-content/uploads/Intimidator-Deep-Cycle-Flyer-1740.pdf

If you compare them, you will see as you go down from a group 24, each one cuts Ah/reserve minutes a bunch, but are considerably lighter, I would have doubts the U1 would give you enough power to even run two hours on minimum speed.