Dennis starts just left of Belly Roll. Look for a roof about 15' up.
Climb up and over the roof (crux). Then left to a short smooth slab and up easier ground to a headwall. Climb a weakness in the wall to a good ledge. Some belay here.
Go up and right, past a fixed pin, and up towards an obvious prow. Pass more fixed pins and step right around the corner just below the final vertical section.
Disagree with Sax. The second pitch is a blast with wonderful exposure if, instead of topping out shortly above the GT ledge, you continue climbing right to merge with P2 of Belly Roll. A fun traverse and step around the exposed bulge are really fun and the gear is excellent.
This is an excellent variation for a newer leader who needs some "exposure to exposure" as it has bomber gear with fun moves and lots of air (for the Gunks).
Also, first ascenionist should be Gardiner Perry (not Gardner Perry), Mary Perry, and Ann Buffin.