I pass all the time. Like Paul I usually wait for a broadside or slightly quartering away. With a rifle I may take a head or a neck shot if I feel confident enough . . .which is almost never nowadays. I'm often close to the river and need to have them drop pretty quick. I passed on a real nice rack a while ago that only offered me a rearend shot even tho I felt I stood a chance of a spine hit. He was too nice to lose in the river.