I bury my catch in the wet gravel on the streambank. Then, I cull the best ones out, depending on how many babushkas are coming for dinner.
Bull trout fillets go under the socks for the hike out. Extra "live squirrels" are released, little balsa wood surf boards with trebles go in my secret fly box compartment. Also make note to not use your "baitfish scentstick that looks like chapstick" as actual chapstick. Those are some of my best tips, oh and gargling hydrogen peroxide in small doses is actually safe and great on mouth sores!