Letting them walk is a numbers thing. In a mako tournament you're allowed one fish a day. So when that 60-70 pound fish that may be legal gets on you let em swim in hopes of popping something big. With deer you have a limit. In Jersey its two for the season and I gave a tag to a friend that left me with one. In hindsight I should have shot the one yesterday as I haven't seen another since. Ducks have limits too. So there are days you let theones that taste like bunkers fly by and wait for the yummier varieties...
As for running from certain fish. That sometimes happens. If you're sailfishing and small king mackerel are tearing up your $100 a dozen baits, you move. If I'm at Chub and I see Dolphin even big ones I try to steer clear. Kills valuable billfishing time and bait. There you will see them find you any way...
Time for a little honesty. If I let a fish swim or a deer walk its not 100% about being a sport and letting em grow. Theres a whole lot of greed involved looking for that bigger one...
