Well, the other option is to simply cancel the flight all together, as they did with this morning's 7am flight from SEA-SFO. They cancelled it about 12 hours earlier. When my Mother called, they quoted ATC issues. My Mother would have been happy to go to OAK, rather than fighting for the last middle seat on the 10am departure.
Great job, Alaska! Cancel a Monday morning business flight to SFO, when all of your other flights are full. It sounds like their ops department is not ready for prime time.