When I was on the B 707 (nosewheel steering both sides) we were taught (indeed I think it might have been a Boeing recommendation) to always make the initial turn in the direction of the side on which you were controlling the a/c, ie if you were in the RHS you would turn right 30 degrees and then when you were physically over the runway edge apply full lock in the opposite direction (this was to do a 180 safely on a runway 150 ft wide).
Not got the books to hand but on the B737 I wonder what Boeing recommend in the FCTM?