There is a level winding device on some of the heavier wreckers, they don't fit an M35 winch though. Besides, they're not fool proof, and "devices" make complacency. There is a sweet spot where the cable will pretty much walk back and forth as it should and stack it's self nicely. Very difficult to pull something 200 feet and not have it stray from that course though. Winching is realistically a two soldier job. Soldier B can guide the cable with an impressive load if the angle is "close" to perfect. More so from the middle of the cable. If solder B stands at the winch, then soldier B is being silly, because the operator (in the cab) can't see him if there's trouble, and B, the cable won't budge from there.
**DISCLAIMER** Common sense must prevail- Soldier B must be clever enough to watch both ends of the winch cable, not be distracted by squirrels, and this operation does not apply if you're "maxing out" any component, dragging unknown loads, using cables of questionable condition, etc. If it's not 100 percent by the book, a radius equal to the cable length should be kept by all but the cab operator, and soldier B will signal when it's time to stop and release tension, at which point the cable can be manipulated, guided, re-started in the other direction, and soldier B can clear the area before the real pulling resumes....
With teamwork, or with one soldier winching operations you'll find that practice makes good technique, and good technique takes most of the "work" out of the work or keeping the cable as it should be. There is lots of elbow grease in the learning curve, but it gets easier.