I do, every time. There's just something about being all sweaty and hot, and grabbing my crank in my hand. It's really hard... well, that is to say, it's USUALLY pretty hard. It gives me something to do with those spare couple of minutes it takes to get the job done.
When I'm in my fifth wheel, I'll go around to each leg five or six times...back and forth, over and over. I've gotten my movements down to a science. It's become a habit, really.
I've thought about getting some of the new battery-powered technology, or even hiring someone else to do all the work. But in the end I always end up using my right hand (unless it's getting tired or taking longer than usual, in which case I switch to my left), doing that repetitive circular motion I've come to know so well.
Just a few days ago I watched a guy a couple of rows over using some motorized contraption as I was busy putting my own hand to good use. Looked like a waste of good money to be honest.
Maybe when I get a little older I'll think about changing my ways.
Pics of my equipment: