Hello Andrew, and Welcome to the Tooele Hawks forum!!!
I've had some great flights at the Stockton bar as well. It's a super place with friendly folks. It's also a great place for practicing top landings. Just don't fly back behind the bar on your approach or you may find yourself in deep sink and possibly rotor.
I'm in San Diego, but I've just called one of my friends in Tooele to let them know about your post and your questions. Unfortunately, this forum doesn't get much traffic because it's been black-listed by hanggliding.org, so I took the liberty of making the phone call to give them a "head's up" about your post. So you should get some answers soon either via a post here or through a PM. So please check back.
Finally, I hope you have a good time on your trip, and please post pictures whenever you can.