I had re-constructive surgery on my left shoulder (I'm right handed) a few years ago and experienced very much the same situation as you, Stowe. My biggest concern was losing my swing (as we all know it's not like riding a bike). My instructor advised me to do the "one-arm drill" every so often, as long as it didn't interfere with my rehab, to maintain the fluidity of my golf swing. I was very new to the game at the time but it did wonders. It also helped with my rehab, believe it or not - the drill is good exercise for a body that offers limited mobility.