re: Trolling motor battery

My boat came with an Optima Blue Top for the main battery and two cheap Napa brand batteries for the trolling motor. Optima crapped out already and the Napa batteries are still going strong. I'm not fully against Optima yet, becuase it may be something in the wiring in my boat that caused the battery to screw up, but I'm also not sold that it's worth the price tag.