Battery touching hood the positive terminal and came in contact with the hood and burned a whole through it?

I was out drifting a couple days ago and went over a bump. I had forgotten to tighten the battery down a couple days before, so the positive terminal came in contact with the hood and burned a whole through it. No matter how I twist or turn the battery now it's still in contact with the hood. Right now, there are a couple layers of duct tape isolating the hood, but would some duct tape be enough or do I need to get some real isolation or a smaller battery?