i know i still have regrets on shooting a deer in the rain, i didn' t find him for 4 days, it has changed my outlook about hunting in the rain.
i passed on a four point tuesday night because i felt i didn' t have a good shot and that was in my head,
as far as practicing, i try to practice every night even if its just 10 arrows, family obligations sometimes hampers these plans.
as far as the survival of you deer, i' ve seen some hard hit deer survive after some bad shots, they are pretty resiliant. but i don' t condone taking an iffy shot.
its only my opinion