I do quite a bit of it. Some of it is easy/worth it and some of it blows. The CUN, SJO, and SJU overnights are really the only good ones that the masses can fly in HOU.
Turns are a productivity killer, plain and simple. SWA has figured out how to do it on the cheap and optimize pax loads. Good on them. I look forward to the airline expanding in that direction, but for now, I mostly avoid it.