On the 'what am I doing to build focus' question... I reward him for looking at me. Whether it's because I asked him to or just because he does (when we're working or if we're in one on one time). I reward him (with praise) for playing tug with me, because he's paying attention to me when we're doing that. I'm not comfortable at this point with giving him anything other than a verbal correction for anything. One of the mistakes that I made (which I won't do again) was I had him on a prong during class. I only really need it or use it when walking him, so once we got into the class I should have put him back on his flat collar. I did eventually, but not right away. So at that point I didn't pull on his lead for looking at the other dogs for two reasons. One- I didn't realize he was 'staring', I thought he was just checking them out. Two- even if I had, I wouldn't have pulled on his lead like that because it was attached to the prong still.
I don't think I'm going to get a lot of focus from him at this point because he's young, he's full of energy, and when he goes into new places he's interested in what's around him. The next class will probably be better, because it won't be a place he hasn't seen before. The "rules" were also different, as I had always allowed him to meet new people and new dogs. Funny thing is, at Bass Pro, he walked past MANY new people, and didn't approach any of them.
He also saw a couple other dogs, and although he noticed them he moved on with me without any issue... without meeting them. I have stopped encouraging him to approach people. He (on his own, it seems) has gotten better about it. However, to contradict himself again... when I took him to the club, he was sort of a social butterfly again. He met everyone, happily played with anyone who wanted to... and Lisa handled him for me briefly which he didn't seem to notice or mind. (My back was burning pretty good, and it gave me a chance to see how I should be standing, holding the line, etc.)