It has been dfficult to get So Cal schools to the Northwest. Menlo travels north every other year, and PLU goes to the Bay Area. Last year, the Lutes did a set in So Cal against Redland, P-P, Laverne, etc. I think almost all the games played in 2009 were in region, but it wasn't enough then either.
The flip side of the issue, is that it has still been a great run even without the playoffs. PLU did well when they won the conference in 2007, and lost a 1-0 decision in the West Region Championship. Hopefully they will return again soon.