From a previously employed crawfisherman, hoopnetter, crab fisherman, and sometimes outlaw (in the old, old days):

Fish work very well for crab and crawfish traps after being left under the hot sun for a day.

Cans of tuna fish with holes punched through each flat side; gunny sacks that have a few pounds of rice or dog food (dry) dropped into the water at a nice shady spot over deep water provides for VERY good fishing most of the time you drop a hook into that water.

Hoopnets set into pairs with a "seine" net strung between them.

These are some ways to assure a good supply of food with very little interruption.