if you have a large inverter
in that situation you really can't balance it properly. I would take both the pos and neg for the inverter
off one half of the bank. but I would try to take the pos for all the other loads off the other half of the bank. so atleast when the inverter was off the bank was balanced.
you'd want the inverter to be on the neg side of the boat so you can properly put a house shunt in
trying to run a 2000w inverter off a balanced bank with ~20' of jumpers in-between would just be crazy they would need to be like triple 4/0.
also fuse the pos jumper wire between the 2 halfs on both sides. the Blue sea MRBF's work good for this.
the size of the all the wires depends on what you have on the boat for all the loads and charging