The limit in Louisiana is three does and three bucks.
Like Pluckit, I can use about three deer over the course of a year so that's what I usually kill. I killed five one year, about fifteen years back, and decided it was way too much.
I like to take two does fairly early in the season and then just watch the does and hope for a mature buck. Last season was a real stinker though. Hunters state-wide, and even up in to Mississippi were complaining about the low number of deer sightings. Most blamed the humongous acorn crop causing very little movement. I got only one doe which is just about gone from the freezer even though we have been using it sparingly.