KayakingAfter the frequent attempts at Bribery, beatings, and simply getting towed at Sunrise - S-B opens the Kayak Forums
Also see http://www.ultimatekayakfishing.com
I use the same battery on mine. Purchased it from Cabela's with charger. You will have plenty of juice to run your unit. Like Angluh said, the depthfinder is definately worth having aboard the yak. Not sure how to help you regarding the puck though.