I would like to install a switch to turn off all power from the battery. I have accidentally had a light switch left on and drained the battery. I want to be able to turn off the battery power to everything once I trailer the boat. It could be like a breaker or a keyed switch. I saw this one at Cabela's as an example. I don't really care if it's keyed or not, maybe the key provides a little security?
https://www.cabelas.com/cabelas/en/...parentType=index&indexId=cat604551&hasJS=true
https://www.cabelas.com/cabelas/en/...parentType=index&indexId=cat604551&hasJS=true