We had one for my basset hound. It worked great, after training she never went past the fence. Even chasing racoons, squirrels, rabbits, cats and the occasional deer through the yard.
We had it installed and the guy explained/helped us train the dog etc. Even when if the batteries wore out on the collar she wouldnt cross the line.
I dont have any experience with the jumping/fence issue. The basset was too short to get close to jumping a fence
