not enough. most years I start shooting in September, maybe late august. i shoot and stop even if i get the slightest fatigue. i don't like chasing arrows around on the target thinking im off because im tired. During the archery seasond i keep a target in my truck and shoot usually 3 before every hunt. 20,30, and 40. one place i hunt is bow only, so i get to do this for the remainder of the season, and still shoot at the house when im home. I have been shooting the same bow setup and arrow setup for several years, so unless i get new strings, or make slight adjustments from year to year as my old strings wear not much changes for me.
You're not hunting the whole herd. It only takes one buck to turn your entire season into a successful one. - BILL WINKE