newtribe
Wouldn't you know it, they came out with a 3rd generation design a couple months after I bought the second generation. It works great though, I can only assume the new one is better.
I've figured out two ways to use it, maybe there's more. The first is what I normally do and just involves swinging it out and it quickly wraps itself around the line you're trying to pull to you. The second is credited to Moss (and maybe he learned it somewhere?) and works if space is tight or there is a long distance. Throw the throwbag over your target branch/crotch. Lower it enough that there is enough length to get it doubled back to you. Then tie the grapple on the throwline (butterfly knot, then girth hitch to the grapple is how I've been doing it.) Then continue to let out your line until the grapple is a few few feet from the branch/crotch. You can then let the grapple drop and swing and usually catch the line on the otherside. Then pull it back to you. The grapple slides to the bag eventually and you end up with both in your hand ready to run you climb line.
The pain was always stuffing the throwline back in when you're up in the tree. Now that problem is solved....