I would like for anyone to correct me here if im wrong but, man it depends on how you roll. You want the largest battery you can fit, with the highest amp hour rating you can find. BUT big batteries are BIG, and big batteries are HEAVY! If you zip around trolling all day full blast then i doubt it. If its windy or you are fighting a current then its out the window. Morning trip out, then evening trip , laying low durring the heat of the day, it should be good to go. Wide open it will be good for about 2.5 hours or so. Thats wide open, with max amp draw. And thats prolly going to throw you over a 50% discharge level. Over 50% discharge is not good for the battery and its servicable life span. Just trolling and floating prolly be good for twice that time.... maybe more. That is of coarse if thats the only thing running off of that battery. Every gotta have it electrical device you run on that thing will chip away at run time. If you fish sun up to sun down im not sure its enough battery for you. And if you do run it all day its gotta go on the charger that night. Everytime you run that battery down followed by a recharge your run time will get shorter and shorter. How quickly the run time gets shorter will depend on how well you tend to that battery. Did you get a good charger? Also ive noticed that academy dosent turn their battery stock very often..... or ever. I'd check the build date on the battery and if its older then 6 months i'd shy away. Look for fresh ones. Buying an old deepcycle is like starting a marathon with a broken leg. There is an academy by me that has an optima blue top, thats been sitting on the shelf for 15 months! Make sure you fuse and ground it appropriately. Id suggest putting it on a circuit breaker. And educate yourself on required power and ground wire size. If you put that battery in the back, and make the run all the way to the front, you will need to run 6 gauge wire. The amp draw on that motor is probably around 40 amps or so. I'm not 100% on that though. If you mount the battery up in the bow you can use 10 gauge.