There is a lot of glass boaters running single 24 volt and 36 volt batteries if you want to spend the money. The other issue running a 24 v. Or 36 volt is cost of the charger as you have to use a 24 volt charger or 36 volt charger. My suggestion is check the prices of the 24 volt battery out and cost of the charger vs. 2-12 volt lithium batteries and the chargers. A lot of 12 volt chargers can be set to charge AGM batteries and charge the lithiums just fine without spending additional money on lithium only chargers.