I talked to a guy this summer that goes up to canada every year in may/june timeframe. He buys some shinners, suckers, and crappie minnows and puts them in gallon ziplock bags and puts pickling salt on them and freezes them before he goes. Im not sure if he puts them on ice when he travels up to canada but when he gets up there and the packages unthaw, the minnows stay firm, Something with the salt keeps them from turning to mush. He says they always do really well keeping them on there hooks and they catch alot of fish. But who doesn’t in canada.