I read all the sandbagging stories here, and am always amazed.
I've only play for 3 years, and mostly in our little town out in the middle of nowhere, but I've never seen anything resembling some of the stuff I read here.
Now I'm not so naive to think that it doesn't happen, even here. All I can say is that if anyone here is doing it, they're doing it very poorly.
I play with these people a lot. While there might be a few folks who are under handicapped, its only by one skill level, and its usually a result of a losing streak. Those same people bounce back and forth between skill levels. If someone was really trying to sandbag, I would think they wouldn't want to jeopordize all that effort by playing better. Additionally, the end doesn't justify the effort. There hasn't been a team from our division go to Vegas in many, many years. Would these folks really be lying low session after session for more than 3 years? You would pay far more in weekly than you could ever win in Vegas.
Do i suspect a couple of folks might be padding their innings a little, yeah, I guess so. But nothing so obvious and outrageous as the stuff I hear here. And again, I could be falling into the trap of thinking I'm seeing something that really isn't happening.
Either way, its not anything that affects our division. I've been on winning teams enough, and other teams that have finished close, that I know how hard everyone tries to get there.
Of course, I may have a different opinion after we go to states this June.

Though the previous two times that I've gone, I hadn't seen anything way out of the ordinary...
I love it, and look forward to my league nights each week. I've met so many great folks, and made many great friendships, learned a lot, and had a ton of fun.