I use the Petzl Stop.

It works with a variety of rope sizes. I have many ropes but mainly climb on Fly or a fat arborist rope.

One drawback is that the Stop sometimes creeps down the rope a bit under load. I usually take a wrap on my leg if I need to stop creeping.

It is easy to get onto the rope while still clipped in to your harness.

Scott

Thanks guys.

The 'Stop' has been called the 'Creep' because of it's tendency to slip just a little bit. Locking it off by dropping a half hitch over the top works too.

The best place to learn about rope tools is here:

http://storrick.cnchost.com/VerticalDevicesPage/VerticalHome.shtml

There are several rap tools that have a 'sweet spot' where th rope slides. Grab the handle too tight and it locks off, let go and it will lock off too.

I'v got several tools that work quite well for rapping on SRT. None that I would recommend over another...except the Unicender

Thanks. I did a search yesterday on Treebuzz.com and got a lot of useful information as well.
I probably should have done that before I posted this thread.

Originally posted by moss
The Petzl ID (D20 S) is a good choice for a hands off/stop descender for PI.
-moss
GriGri vs. I’D – not better or worse, just different.

Finally. . .
After my yapping like a Chihuahua about the I’D being the “correct” device for the job in previous posts, someone of reputable authority at least recognized its existence.

Like the Petzl web site says. . .
GriGri: For work positioning on inclined surfaces.
I’D: For descending a rope.

Thank you moss, I’ll rest a little better tonight.
Now, back to my perch at the dropped carabineer thread. <chortle>

It is interesting, under the Sport category Petzl lists the Grigri as a belay device. Under the Work category they call it a descender.
-moss