See, we call that play a different name. We call it iso. I am pretty sure we run it exactly the same way as you call belly. It's a fullback dive to the weak side. The linemen cross block, and the play hits the B gap. The QB reverse pivots, and the fullback takes a side step before hitting the hole. The halfback leads through the hole, and the center attempts to reach the MLB while the rest of the line is reach b locking. That's belly?
The reason I would not call it Iso is because there are different Iso plays in the wing-t. Belly Iso is the best one (Belly Iso, Belly XBL). You could make a living running nothing more than Belly Iso, Belly Keep Pass and Counter. 80 Series is my favorite one in the wing-t. My goodness - Belly Iso, Belly XBL, Belly Down, Belly Keep Pass, Belly Sweep, Belly Option... Even running the DW now I still like having my wing-t in there. Belly Down is such a perfect compliment to the Power play.