We called em jaggersI used to get some mean sprags from those horrible things.
Do you have any pics of the trees you were working?I haven't touched a choker for over 20 years.Man did I used to get some mean sprags from those horrible things.
Bull chokers were 1¼" swaged cable,horrible to have to dig/ jam/ ram them under logs . Especially if they didn't have bullet ferrels on the end
We used to North or South bend most of the time,so you got really good at spotting the rigging ( mostly) to right onto of the logs.1 1/4-inch cable...that has to weigh over 2.5 pounds per foot, iirc. I'm sure 3/4 inch is about 1 pound per foot, and 1/2 inch is about half a pound.
Move much cable around by hand, and you'll know it's heavy stuff .
We always used 'haywire' to do that, 1/4" (?) cable routed to pull the mainline into the new setting.The most miserable memories of cable logging were the occasional manual skyline shifts.
You could usually drag the skyline over using the tail rope but sometimes you couldn't.
So then it was three guys moving a 100 meter skyline extension laterally over a hillside a few feet at a time ,working upwards and then go down over and over until it was inplace.
Usually the skyline was attached to a dozer,the tail rope block too.We always used 'haywire' to do that, 1/4" (?) cable routed to pull the mainline into the new setting.