I'd stay away from Jones and their Kennels. Do some more research but it's pretty much fact in the jagd circles that the Jones are a puppy mill that don't truely test their dogs, they have like 40 of them. Doesn't mean you won't get a good dog or that they have never produced a good dog but the odds are not on your side. Don't base your dog buying decsions on websites or fancy sales talk. You'd be better off to talk with Jagd owners and see who they recommend. It may take some time to show them you have a genuine intrest before they open up to you. Terrier hunters tend to be an inclusive group.
As for your other questions...Jagds have a VERY high prey drive and need to be hunted HARD repeatly. Not just bloodtrailing, althought they excel at following up trails. I use mine on the trapline to follow drags and they do pretty well at locating and holding coyotes. As far a decoy work, there are MUCH better breeds to get. I have used mine with my fully trained decoy dogs and my male does alright but not what a good cur or even my DD and GWP's do. My female is too hard and her only focus is on the kill. If you have a intrest in only bloodtrailing and trapline with a little decoying I would point in in the direction of the curs.
What I mostly use mine for is denning both coyotes and coons, hunting old houses, barns and brushpiles. I also use them for go to ground work on foxes and ground hogs. I also run them in the timber kinda like a hound but not as far ranging. They are silent on track but open up when they see game so they catch quite a few on the ground. The little dogs really live to fight and don't seem to be happy unless thats what they spend their time doing. They can be hard headed SOB's and really take a exp. trainer to get the most out of them. They can be obiedient and great companions if you put the time and effort into their training and use a firm hand when ever they step out of line. Aggression can be another problem but once again if you give them something to focus on they can be great dogs.
Feel free to ask me any other questions. Here's some more boards that have quite a few exp. Jagd owners.
http://jagineb.proboards.com/index.cgi?
Great board with some very exp hunters.
http://huntingterriers.proboards.com/index.cgi
Newer board but is starting to get a good following.
Hope this helps.
Tim
