If you require a windlass to retrieve your ground tackle then
you are restricted to 12 or 24-volt windlasses that, due to
the nature of 12 or 24 VDC current, need thumb-thick
cables.

Stupid, stupid stupid. Why doesn't anybody manufacture
a 120 or 240 VAC windlass so as to require less thick
cables strung the length of one's boat? A thick cable to
the inverter and regular house-type, 30-amp rated wires to
a 120 or 40 VAC windlass from a properly-sized inverter
would solve the problem.

Better yet, try downsizing your boat so as to not require
a windlass. Or, perhaps just a large manual winch on
the foredeck for those feebles with bad backs or weenie
arms?

--
Sir Gregory - fully of retrieving his ground tackle by
hand and arm strength alone.