B/L/S seats

Okay, doing some test bookings for 2011, ahead of honeymoon same period 2012... and rather concerned.
Can't find a B/L or S seat return to san fran in 2011 April -> July period.
Need an upgradable econ seat ideally to allow us to use miles for 2 of us to upgrade to upper.... But with a Y at 1600/each, its looking not good for that.
Do virgin still offer the cheaper "upgradable" economy fares, last time I checked as looking at 1200 for both of us, which is a reasonable £750 each for upper class when you add the upgrade taxes and my 120K miles?
Anyone else with a clue as to why Virgin not appear to be allowing booking of B/L fares (S fares face same issue).
Can't find a B/L or S seat return to san fran in 2011 April -> July period.
Need an upgradable econ seat ideally to allow us to use miles for 2 of us to upgrade to upper.... But with a Y at 1600/each, its looking not good for that.
Do virgin still offer the cheaper "upgradable" economy fares, last time I checked as looking at 1200 for both of us, which is a reasonable £750 each for upper class when you add the upgrade taxes and my 120K miles?
Anyone else with a clue as to why Virgin not appear to be allowing booking of B/L fares (S fares face same issue).