I do it every year. I fish with a buddy and his dad east of the mountains. His camper doesnot have a freezer he has the old ice box. So all the fish go in my freezer. Just before we leave he fills out and signs a sheet of paper with the info they need. The reason we do it is sometimes they may stop you over their for fish checks. It is alot easier to explane if you have the paper versus not having it. When we get close to home we stop and he gets his fish back.