Optima battery rate 150 down to 100 minutes discharge rate at 25amps. There seems to be issues with the mexican made Optimas. You can get Trogans up to 440min. at 25amps.
Trogan make a great battery.IMO
Generally, gel and AGM batteries have about 20% less capacity, cost about two times more, and have a shorter cycle life than comparable flooded lead acid batteries.
(thats not what we want for a trolling motor)
However, Gel and AGM batteries do not need watering,
(so what, maybe water'em once every few years) are safer (no acid spilling out),
(been running flooded for years and aint spilling nothing) can be placed in a variety of positions,
(mine sit in the back on a tray, who cares) have a slower self-discharge characteristic,
true and are more efficient in charging and discharging than flooded batteries.
Gel batteries NOT, need special charger, no benefits-AGM Yes Gel batteries are more suitable for deep cycling applications whereas AGM batteries are more for light cycling and engine-starting applications.
HTH