Crazy Jim,
Buy one for sure.
I love it.
I'm not as fit as I once was in younger years, but the spider jack II moves so well that I often ascend with it, with IT alone. Hand over hand, no other ascenders, no foot ascender no foot locking. for up to 35 or 40 foot ascents.
It does NOT feed slack on my 1/2" Hi-Vee every time, but most of the time is way better than never.
and on removals, heck, with spurs you just lightly spur up a spar feeding the spider jack slack, so effortless, it almost makes you laugh how easy it is.
crane assisted removals, it is so awesome! When you are ready untie from the crane, just unclip the eye, pull it out, while you are pulling it out of the crane tie in point, the spider jack is eating up the rope, when rope comes out, there is little or no slack to run through it, you are ready to put rope into your new tie in point.
Spider jack makes things so easy, this is what keeps me from using the rope wrench and SRT more often.
Spider jack ascents = easy, little effort.
SRT ascents = somewhat fast, but tiring. Plus you need another ascender for help. For me.
I used the spider jack on a mid size trimming for the very first try.
Nothing scary, felt like it was made for me.
Went big with it ever since.
my cam is the original, not worn out and I started using it this past summer, maybe August?
Few things to be aware of; like in my "spider jack not so good for flex in tree" thread. I have a few more that I don't have time to explain right now:
1. leaning into the climbing line, makes spider jack slip.
2. groundmen holding some of your weight, as in pulling you to a location with your tail, can make SJ slip.
3. And if tie in point is a very large diameter and you are near that location, velcro comes off, spider jack pulls to the side of biner, gets side loaded and hard to fix.
explain later maybe.
It's an awsome tool and any good tool is not cheap.
I don't think $340 is much cost for such a wonderful tool that makes things so much easier for me every day. (at least, that's what i think it cost me?). I was thinking of buying a second one, just so I could keep one on a short climbing line and the other on the long climbing line, when I have some extra money.