Rap the route for the descent.
No one should climb below another party on either route on the Grand Sentinel. You would just be asking for it. If for some stranger reason someone is below you, consider rapping the south face if no one is on that route.
Reaching the top of the first pitch rap chains takes a free air swing or two. A good rappel to put knots in your ends.
Cardiac Arete, 5.10d, 4 Pitches,
Grand Sentinel, Banff National Park, Canadian Rockies, July, 2008