I just got a new motor with a new gas tank and will be getting a new battery soon. In examining the cockpit space for the water tank and gas tank, I find there is little space for a full size battery. I do see there is space below the "shelf", which is actually the hull bottom. I need to easily access all three items in this cockpit space for re-filling and re-charging. (taking the battery out to recharge at home)Here are my questions:1. Can I put a full size battery below the "shelf" ?2. Should I get a battery holder to make sure the battery doesn't move around?3. Has anyone fit all three items in the cockpit space? How did you do it?4. Are there any dangers I should be aware of with the battery, wiring and gas tank in the same area?Thanks in advance for your sage advice.