I would suggest 2nd or third weekend for the hunt, as labor day weekend is the first weekend and many people have family lake stuff or other things. I'd gladly pay $40 for a hunt.
Those of you who haven't dove hunted, it is a blast. When I was younger, we'd hunt them all day. Now I just go out in the evenings and mornings and light them up, if they fly straight (which they never do). It's one of those hunts where you can sit on your butt and blab away w/ friends as you hunt.
Good times!