As a person who holds a Crane License in NY State let me splain it to you from my point of view.
My License, MY RULES backed by the machine owner's rules based on his insurance carrier's rules! If I can see the hook and you tie on the way it will play out is I lock the house, the boom and the lifting line as I dial 911 to have the Fire Department come out to rescue the mental defective entangled in my lifting line. There won't be any arguing about it!
If I can't see the hook and you tie into my lifting line the oiler or person spotting the hook better tell me right quick so I can lock the house, the boom and the lifting line as I dial 911 to have the Fire Department come out to rescue the mental defective entangled in my lifting line.
I'll also guarantee you that you and your company will go on a list of customers who will NEVER again get crane service.
Yes I do know you're the last of the cowboys, know everything there is to know about knots, shackles, slings, ropes, nonmetalic straps and of course the machine I'm sitting in because I HOLD THE LICENSE! You also know exactly what the hunk of wood you're about to load onto my machine weighs to the pound, what my boom angle is, how much I can pick at that angle and how much groundpressure I'll be putting on the outrigger carrying the majority of the pick. Again, I HOLD THE LICENSE!
I spent a few hundred hours qualifying to test for that License, and I ain't about to loose it for one pick that went down the crapper.
You don't like the way I do things? I HOLD THE LICENSE! Guess who wins the argument?
Fortunately there are plenty of cranes available to be bought thanks to the current lack of demand. Since you probably don't want to bother getting a License, I suggest you buy a truck mounted machine.
Best of luck to you.