Batteries for trolling motor on a jon boat..>>>

Hi all...

I'm looking for suggestions of deep cycle batteries for my 12' jon boat with
a 65lb, 24volt Minn Kota transom mounted motor. I will be using it in a
local reservoir that only allows electric motors. I'm looking for a good
trade-off between the weight of the battery (I'm going to be needing 2
batteries), the reserve time & amps, and cost. I've ruled out the sealed
gel-type batteries due to their weight and COST! The total capacity of my
boat is about 500lbs (including equipment and people).

Any suggestions? From here I have access to most battery distributors and
outdoor-type stores including Bass Pro Shops and Cabela's.

And -- suggestions for a charger. I'm supposing that I will be taking the
batteries out of the boat at the end of the day and recharging them in my
garage. I've heard not to let the batteries run down too far and that
recharging them after use is the best way to maintain a good charge -- yes??
Is this right?

Thanks in advance!!!

--
Marty S.
Baltimore, MD USA