I have a question about how best to keep my dog safe. Let me give a little background info first. Five years ago we moved to an 8 acre farm with our two dogs, a doberman and a malamute mix. Both had lived with us in town for three years and were reasonably well trained by the time we moved to the farm. We're on a fairly busy state highway and cars roar past. The dobie and mal mix rarely went near the road, but we got lucky on several occasions when they chased something across the road and there just didn't happen to be a car coming. My mal mix died in January (cancer) and now I have a new pup, a seven week old german shepherd/husky mix. He doesn't know about the road. We're working on basic training; sit, stay, come, down, etc. However, I have not yet trusted him off leash in the yard. He's gotten loose a couple of times and runs either to the pasture (risking horse kicks, llama stomps, etc) or along the front fence line next to the road. I do lots of off-leash walks in safe areas, and he comes when called and doesn't just take off (more shepherd-like, less husky-like...good). I don't think he's just going to disappear, but I need to feel a little more secure about the road. So here is my question. I am considering using a shock collar to teach him a boundary at the front of the property. Due to the set up the use of an invisible fence isn't really practical, but I would like to use the collar in essentially that way. However, when I take the dogs for walks I also leave going across that same boundary. Can I teach him (Titus) that when he is loose in the yard, the boundary is there, but when he is on leash with me he can cross, without totally confusing him? I will also add that I am a fairly skilled trainer with good timing and consistency. I have avoided shock collars for years (I've borrowed them from friends on several occasions but never had the heart to use them). I feel that in a good trainer's hands a shock collar can be an ok thing. On the flip side, in the wrong hands it's a torture device. I like to thing that I'm one of the good ones, so please no attacking on the use of shock collars. I just would like to have advice on keeping my dog safe but still able to leave the property with me when appropriate. Personally I would like to fence the entire perimeter of the 8 acres, but my hubby isn't going for that. Plus way expensive. Thank you for any thoughts.