I shoot what my state game laws allow me to shoot....which is 1 bucks and at least 2 doe (with purchases of tags). Additional doe tags can be purchased at the court houses.
I am sure game laws are obviously different in different states, but in PA...you can't just freely blast does to correct your buck/doe ratio on your land...unless doing it illegally and not within the gaming laws. The only exception, that I know of, is if you are a farmer for a living. Even still, you have to have your farm in a "red tag" crop/land management program with the state...and the state sends the farmer a certain number of tags to provide to hunters...the harvest still has to be tagged and reported.