Don't forget bait buckets. Back in the day older bait buckets would be dropped along side your boat with a little grill of holes on the trap door to let fresh water and O2 in there for your hapless victims. Not reason fry couldn't get through those holes and make it to the next BOW the fisherman heads out to.

Surprisingly still in use. Seems like a heck of a way to spread nasty things from lake to lake!
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