Start at the Hyalite Creek trailhead. Skin south, turning right after a ~mile to ascend toward Twin Falls. The switchbacks can be icy, so you might need to bootpack.

Climb Twin Falls, a WI3 route. 60m ropes should do the trick -- we used two half ropes. The right side is less steep / sustained than the middle.

Ditch gear on a tree above the falls and skin southwest to Pinner Couloir. A quick bootpack (hopefully no postholing). Hop turn and side-slip back down to the bowl, then ski back to the top of Twin Falls.

Rappel ~60m to the base and transition to ski / bushwhack / skate back to the trailhead. Tip: stick to the switchbacks if you want to avoid log hopping.

Full trip report: https://www.grizzliesandavalanches.com/hyalite-twin-falls-pinner-couloir/