toggle switch bait tank help

[Yakkid]

Okay yall I have a 5 gallon bucket bait tank and the wires are going to a 12 v battery and obviously as soon as i put the wires on the battery it turns on so here is the million dollar ? how would i turn it on and off without disconnecting to battery when im out in the water which yall know can be difficult so any suggestions let me know

[Yakkid]

would a toggle switch work remember out on salt water so whatever happens i know the salt water will effect it over time