Sorry to some of the guys here; but the OP didn't ask for opinions of 12 volt verses 24 volts. OP asked, if the way he's wired his 12 volt batteries was a good way to do it. Yes (IMHO) it is probably the best way of getting the most out a 12 volt system. As for charging the batteries, just use the one bank of the charger for the two that are connected in parallel and the other bank to charge the starting battery; assuming you have one? As Shane (Sinker) said it will take longer to recharge the TM batteries; but 6-10 hours at 10amps should bring them back to full. Every fisher needs to sleep sometime. LOL So plug in the charger; let your Toddy of water, honey, cinnamon and your favorite whiskey warm and enjoy. Knowing the batteries will be happy and ready to go in the morning.
Dan.