Bit of an update:
Went to town yesterday. Bought one of those pincher/training collars. Came home, fitted it to him and while putting it on him, just tugged a bit on it to make sure it seemed to fit ok but also let him know it was there.
Now.... is this the fruits of my prior working with him or is it because of the new collar??? When I went out with him he was (almost literally) at my side. If he wanted to walk ahead, I could just flick my wrist to "jostle" the collar and he came right back. I'm wondering if he's been exposed to one of these before because again, either what I've been doing has finally come clear to him OR, this collar is an immediate help.
As we were walking and I was mesmerized with how well behaved he was, I kind of laughed at myself thinking "Nah.... there's really no test until we go outside and get confronted with deer" (at which point he goes ballistic wanting to chase them).
As luck would have it, as we topped the hill.....there were about 5 deer a couple hundred feet ahead of us grazing. You could see him get excited but again, I twitched (didn't pull so the amount of NON-pressure this took was amazing) anyway, he came back and sat down. Now, he was whining and doing his short chirpy barking but NORMALLY He's reared on his hind legs letting the pressure of the leash on his neck hold him back as he's leaning forward at a 45 degree angle trying to pull me to them. It was quite the difference.
Later, went on walk with sister in law with her three dogs, one being a male that Rufas once attacked. Rufas was on leash the entire time and they got to run around (we're trying to show him how normal dogs might act) He stayed by my side the entire time, never lunged at her male dog, never barked at him....actually, showed near indifference to him/them as we traipsed through the woods.
I've seen Rufas hide his thoughts though....and (before) act nice, then if he gets off the leash he's off like a rocket to attack his target. So I was suspicious of him this entire time however from the first step out of the house until we returned, he was under composure.
Even sister in law was making comment that she can't believe how well behaved he was. Now, I want my wife to walk him with the new collar so she can see how to maybe control him but to also let him know that she's the Queen Bee who must be obeyed. He's strong enough to pull me over IF he catches me off guard (or wraps leash around legs and then bolts in other direction) but I'm usually watching out for that. He can pull her over much easier. I don't think she walks him with the apprehension (I really want to say focus/attention to his shennannigans) that I do.
Right now I'm putting this training collar up there with one of the best 'dog purchases' I've ever made.