Was in TAPA eons in the C-5, the turn was a tight one, seem to remember doing the turn "right way" around. Going into the the button then turning is a set-up!!
We needed 147 feet to accomplish a 180 on a dry runway. Two techniques-one for the old heads and for the newer guys. The old way was to stop, have loadie check for alignment out the troop door (a la DC-10), apply most but not all steering angle, caster aft gear, apply breakaway thrust on outboards, crank in remainder of steering to complete turn at 4-6 knots ground speed. New technique was to go in rolling at 4-6 knots, caster the gear and try to spin the steering angle. Most guys could not get the NWS to max angle before 45 degrees of turn done. It worked but seemed easier to screw up. I liked the first way, much easier.