Hay belly and sand clear
I wanted to put in a quick plug for sand clear. We don't have sandy pastures (we have clay) but Moonshine has a hay belly and has since we've had her. I decided to try the one-week sand clear, and she slimmed down noticeably. Her hay belly is still there, but she's definitely slimmer. We went up one girth hole on each side!
So, if you have a horse with a hay belly, I'd recommend trying it. That's just my own experience.
"Saddle fit -- it's a no brainer!"" - random person