I can't find the post but somewhere in this thread I mentioned that I had to stop using my Rope Runner on my 10mm Reep Schnur Hook line because it started slipping. I believe I said I had the bird bollard tightened all the way down. Turns out that was lazy fake news, I had the bird all the way open when the Reep Schnur started slipping with typical bollard wear. Duh. Anyway, closed the bollard up a little and back in business, RR functioning very well with the Hook. I use the Hook frequently, same story, I can usually cover a broadleaf crown prune with one SRS rope position, the Hook lets me reach across quickly and move around the crown efficiently without wasting a bunch of time going up and down individual leaders. This includes covering multiple trees from one rope setting if the trees are reasonably close together.
Oh, another thing, I'm effectively one-eyed these days, Hook throwing was the last thing to come back, throwing and setting ropes from the ground is now going well. Hook throwing is now going very well, accuracy and distance all good. the human brain is amazing ;-)
-AJ