Actually KH, if you were SE on AC, you start out with 8 one-way certificates so it is possible to get upgraded all the time if you fly transoceanic flights occasionally.
I have worked my travel plans (the ones I know about) out until November and I have only one transoceanic, yet I will have enough upgrades to do all my transcontinental and transoceanic flights. In fact I will have 10 leftover upgrades. I have already earned 4 for flying the first two months of 2000 which brings my current total to 12. I typically earn over 6000 points for a transcontinental run (some like to NFLD will earn me over 9000 points) and over 14000 points to Europe so my certificates keep getting topped up.
Even if I fly a few short hauls to YVR, I should have enough certificates to get more than 100% upgrades
http://www.flyertalk.com/forum/smile.gif(presuming there are upgrade seats available -- now that is another story
http://www.flyertalk.com/forum/frown.gif)