Tec, I'm not sure of your experience level, or if you've ever been in North America, but you may not realize just how much of this VR work goes on over here.
On any given Summer day, I can easily spend a 9 hour day on a 150' line. It becomes second nature if you do enough of it....others I know LIVE at the top end of a line, think of 500 + hours a year doing just that...nothing else.
Believe me, I can hit a spot consistantly, and fast, because I HAVE TO. If I don't or can't, my competitor can.
One job last year had 100 - 1,500 Lb loads in to a jobsite, all on a 150' line, and on an 8 minute turn-around, rain, fog, snow, whatever. the site was deep in the trees, and we actually stacked (lumber) loads on top of loads, no room otherwise.
What I do in general charter is NOTHING compared to Seismic and Logging pilots. A good logger will do 2-3 minute turns all day on the end of a 200+ ft line, ...10 hours a day.