Dont ever feel bad about a bad shot, We the Archers get a bad name for crippling deer, but just think about how many rifle hunters start blasting at random at deer running accross the feilds, and alot of them are only 1 or 3 day a year hunters with no tracking skills, ive witness some of them shooting and if the deer didn't drop in sight, they figured they missed it. but ive shot buck in rifle season that had broadheads in them, and they still were able to get around 3 weeks later quite well. if you loose the trail check close to water, they seem to head that way alot of times when crippled.