I've put them down and snugged them up by hand, no recipe, no snug-plus-x-turns, just snug. I've also put them down with a DeWalt 3/8ths cordless drill that does 165 inch pounds of torque, and found that lacking. I've also a Rigid 1/2 in drill that puts out 535 inch pounds of torque, and think that is too much.
I'd like to suggest that perhaps the best way to do it if you want to be consistent is with a cordless drill/driver set to slip at some value that seems to work for you. What that would be, I have no idea. Some experimentation seems to be needed, and next time we go camping, I will try to figure that out.
