Yes, that sounds more like what I've been doing - with the treat in my right hand and putting my left hand under his belly. I've been working him a lot more from Forward rather than from Heel (another thing to work on!). The other hand signals I have down pretty well. He's just being slower with Stand because we started late and have been working on his other commands a lot.
Today he seems to have figured out that if I don't want Sit or Down, then he can Stand up and get rewarded with praise and a treat...even if my hand signal is like a flopping fish out of water.
I think he is at least learning the verbal command. I've tried a few different hand signals, so I just need to get consistent.
Thanks again Cindy!