Okay getting ready to pull boat out of winter storage soon and I would like to install a good power supply and ground. I would like to figure out how much wire is needed for Pos and Neg, unfortunately I would like to order the wire now but I do not know how much I need as I cannot look at the boat. I have a direct drive supra launch, does anyone have any idea of approximate lengths I would need to run new supply cables for power and ground to the BUS?

Thanks