Thanks for your replies, I think you're right practice is they key.
At one point I vowed that I didn't care if my dog never got past our front yard, that we would turn around everytime she pulled. The only problem with that is that she really does need the exercise.
Fortunately for us we have a safe off leash area nearby our house for that.
it's nice to know I'm not the only one out there dealing with this.
Thanks and back to practicing!!