Does anyone on this thread speak Jive?! Or at least Bajan, so we can translate for @swingdude? Funny, our crew goes through the "what's your vector, Victor?" routine at least a couple of times a week when we're breaking off or meeting up on multiple job sites.
I'm Jeff, no relation to @Jeff...
Sometimes that's just a combination of an unskilled salesman and deep pockets. If you're in the black, don't worry about their prices. If you're not, I'd talk to their production staff on the low, because it could just be a matter of time until they implode.
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The forces on a basal anchor are described by a 2:1 block and tackle. As with any mechanical advantage system, the theoretical change in force is accurate only in a physics teacher's frictionless vacuum. In the real world, there are losses. The 2:1 of a canopy anchor is extremely inefficient...
just FYI, I charge $300 minimum, usually $350-$375 for me to show up in an '89 Oldsmobile with my climbing gear and a 201, maybe a 1/2" rigging line, maybe some 1/2" rigging gear, and maaaaybe a 50cc saw. I'm in Philly, a tight, mature, heavy volume market, but still, don't sell yourself short...
Muffs+plugs for the win, as per Jeff Jepson. I rock both whenever I am chipping or cutting for longer than a minute or two. The army took enough of my high frequency hearing as it is.
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@JeffGu is like the uncle who tells better dirty jokes than all your other friends together, then kills your burbon, Bogarts the doob, hits on your girlfriend's little sister, and sneaks out the back with her just as the cops get there.
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@TimBr is right on with the knots he identified, slip knot and Blake's hitch. The third knot used to choke the stem is tied midline and so almost certainly an alpine butterfly, though a circus bowline would also serve.
I like having the larger Shizzel spider plate handy with some short hanks as it allows two or three point balance and can be used like a hub and straps for lowering several pieces at once. I do like the Blake's hitch method too, and you don't even need a separate piece, just clove or cow hitch...
Small ring against the trunk, large ring wraps on top.
with an adjustable friction saver, I don't find the wrap necessary unless the bark is very smooth or the stem is <5ish inches, just move the prussik until the rings are a couple inches apart, but it's a great technique for a fixed length...
@yoyoman has, several times:
@FluffyFish, remember, you're talking to a bunch of neanderthals (myself included) who regularly overload ropes in ways that would make an ewok blush. These guys drive 25,999 lb trucks to the job site and then carry their gear to the tree with either mini...