We trained Star to come when called with a long rope, as described in above posts. We were concerned that she learned to stay away from the fence in our old house, it was only 4'. She has pretty good recall for a husky, but we would still never try leaving her off leash except in the backyard with us standing there. I have to keep an eye on Sherman at all times - he's escaped from the back of my car twice when I've unclipped his leash - jumped right back out & ran off at the park once, and once in the parking lot of petsupplies plus - nearly gave me a heart attack with all the traffic!
Just keep working with Kenny, try him in fenced areas, but I would always be careful in public places - you never know what might catch his attention and he's off ina flash.
*for the pulling, try a Gentle Leader head collar, they work great.