I do 2 systems when it makes sense for me, not out of an ideology. I do either 2 SRT or 1 SRT and 1 DdRT, never 2 DdRT. Ascending in 2 systems sounds bonkers to me, I couldn't do it, haven't tried.
I often use an x-ring in the lower third of the tree, to improve rope angles and add extra friction in natural crotch rigging. Nothing to retrieve up top, the low ring is easy to retrieve before coming down.
I love that old video with McMahon. Beranek also covers this technique in The Working...
Natural crotch has always been my go-to. I use my 3-strand more than any other line. But a device can handle more weight, by hand, without adding friction down low.
I found myself in a big walnut a couple years ago, side job for my wife's cousin, no cleanup, no crew to help, just me and the...
I use a homemade rigging wrench as well, with an X-Ring and a steel zk1. It gets the job done but not great for catching anything dynamic.
My worry with the DR is pre-tensioning, doesn't look to me like you can pull it very tight before the cut...? I haven't used it.
I have a friend who loves...
I'm still using an old backpack for my stuff. Switched to ehs with rigguys a while back, so much easier than traditional. Don't use cobra much anymore, but sometimes. Got this DeWalt 3 inch cutoff tool for ehs, works mint on the ground and aloft.
If a pulley is a rotary lever, then increasing the sheave diameter doesn't increase the leverage because both the input side and the output side of the lever are always equal in size, equal to the radius of the pulley. It is a seesaw lever, with both sides equal on either side of the fulcrum...
Brion is a legend. I love it when I stumble across one of his posts in old threads here on the buzz. That's an elegant explanation of the leverage of pulleys...
I look forward to winter shutdown every single year. I spend the time with my family. Reading, writing, planning, splicing. We have an outdoor rink. Planning for next season. Recovering the body. Love the time off.