If you're trolling Batch, you're more likely to catch lakers, than waldos.

Here is what we do. Filet the fish ASAP on an open reef or rock point. Wash fillets completely. Pat dry. Put them in a 1 gallon zip. Put zip in a canvas bag, wet it, and place under seat of canoe. Before arriving at portage, rewet if needed, then at portage, put it in the top of a pack. At end of portage, repeat rewetting & place under seat again, until ready for use. At camp, tie a piece of rope 25' or so to bag, and drop in deep water offshore, tying other end to a tree or rock until ready to cook.