Electronic Collar?

That would be exactly the age I would use an e-collar BUT you have to do it right or you really can mess up your dog. All my friends who just buy them, put them on the dog and refuse to really read up on the directions and proper useage really screw up their dogs either long or short term. Or end up with a collar-wise dog that only listens pretty much ever when they have the 'heavy' collar on.

Point being, if you do choose to go the e-collar route, I'd be locating a good e-collar trainer in your area you have confidence in. And arrange for a few privates with them for when the collar comes in.

For many, the e-collar seems like a quick and easy fix, and (short term) may appear to be working out. But the fact is, they are just like everything else we train our dogs, the human component is the weak link when we are lazy, inconsistant, or just don't bother to bone up on the method (directions? who needs directions?). Added to the fact we have to continue for months (years) with the consistancy and training so our dogs understand in a calm and clear way.

Hey, you're in Beantown? I grew up there, and just recently moved to Germany. Try giving Terry Haskins a call. He is an electronic collar specialist. He trains people to use these collars motivationally, not as some heavy-handed punishment, but as a method of training. Ironicly, for some sensitive dogs, they finally can relax and learn better without anything restricting face, head, body, or neck.. no constriction, just a soft reminder from the collar cues them to pay attention, a command (chance to earn praise!) is coming up. I do not use an e-collar on my dog currently, unless for offlead recall practice, but reccomend getting a trained specialist to guide you. A few lessons may cost you, but it is worth it if it is for the dog's safety, and learning how to correctly use these collars is best by a qualified professional.

My last working assistance dog's trainer reccomended Terry to me. Sadly, I moved away before I could meet him! Here's the link.

http://sitmeanssit.com/dog-training-locations/dog-training-boston-massachusetts/

I'm not a fan of the Leerburg video as has been mentioned. You can read my review of it here. http://loucastle.com/books.htm

I’m also not a fan of many of the trainers who follow the teaching of sitmeanssit. Some of them were experienced trainers before they learned how to use the Ecollar from the owner of that franchise. But some were not. The school is three weeks long, costs $5,000 and includes marketing advice. You can have absolutely no dog training experience, go to the school and come out as a "Certified Remote Training Collar Specialist." Such certifications, issued by the person who owns the school, are just about worthless.

In any case, those folks often use monstrously high levels of stim to blast the dog into immobility and then they show them the only way to make the pain stop is to dog as required. I've seen them put a dog into learned helplessness, a horrid condition where the dog stops all movement because "everything hurts."

They'll talk abut how use the Ecollar in a "motivational way." But this is their own definition of "motivation" and not one that most other people think of when they think of "motivational training. Every animal is "motivated" to escape pain, and with the levels of stim that they use, it's definitely painful.

BUT some trainers have taken that method and modified it to be humane. I'd say that if someone is billing themselves as a "Remote Trainer Specialist" they've had little experience out side the Ecollar and this school, and I'd avoid them. If they have lots of experience training dogs before going to that school, I'd take a look, but still you need to be careful.

If you train the dog to recall and sit with my methods the dog will learn that when the stim starts he's doing the wrong thing and that when it stops he's doing the right thing. THEN you can use it to stop him from chasing the joggers by simply recalling him when he starts to chase them. You can combine a stim with a "NO" when he shows interest in them and he'll know that you don't want him to show that interest.

BUT if you just put the collar on him and stim him when he chases the joggers, he can become aggressive towards them, making our problem much worse.