thought I'd add a few things, If you place the remote hook by the spot you land, when you take off, its looking you in the face when you take off. and you can cycle the hook and see the knob, twist.I would recommend also reading or taking a riggers course, In many jurisdictions , your are considered a crane operator, as you are carrying a suspended load, and you need to be carded. and can be charged big time without it. for placing the line down, if you start with the hook on the ground and land placing the line behind you and dragging it forward as you land, can be dangerous( we lost a new B2), as the spectra line landed on a moving around tumbleweed, and the tail picked up.Also in an Astar, light on fuel(end of a cycle) and with light guys flying, when they get a foot from the ground and then try to move the A/C back a bit (to land by the marker put there) the tail rotor will be very close to the ground if not in the grass, But sometimes the LZ was just cleared for you and there is stubble of saplings etc sticking up and it will come too close for comfort, and if that line is laying on the stubble, one aft correction, and you can pick that line up. so don't land an astar moving back if your a skinny runt
Also for the truck driver, put a location rock by your front tire, so if you disconnect the trailer, when you come back to reconnect, you back up to that rock beside the truck's tire, and voila, the ball is under the trailer hitch..