I was looking at my wire collection.
I have some wire that is probably #6.
12 feet = 25mOhms.
I think if the wire is laying on the floor it will hold 80A. (as long as air can get to it) If the wire is not in free air the temp will clime too high.
A 12 foot role will heat and the inside conductors will burn. But if the role is in a metal bucket of water it should cool off the inter turns.
The hardware store has Cu or Al wire up to the size of my thumb. (house wire)
Look at wire size + current + temperature rise.
I was just thinking about what you can get from the store in your town.
If the battery is on the floor and you ran the wire from the battery to the sealing and back to the battery, might work. Or go with heaver wire and run up/down and up/down. If the wire only gets warm it is much safer than using wire that gets red hot.