As an old commercial driver, my answer would be that "pull-ups" don't count.
I've known many drivers who bragged about putting their rig "in the whole in one shot" and some of them never hit anything - but many of them did. Damaging their equipment - and their pride.
Don't worry about backing in in one movement. I like your approach. Pulling forward to straighten the angle and improve your visibility is smart. (and easier on your trailer's suspension)
If you can't see and you don't have a spotter - don't be afraid to Get Out And Look (G.O.A.L.) JMHO - FWIW
