<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Ace Cdn:
Flight 33/34 is mainly put on for the long haul traffic YVR-SYD SYD-YVR therefor sometimes if they are expecting the flight to be full they will close out traffic for the YVR-HNL-YVR sector</font>
Remember we're not talking about particular dates. We're talking about all dates after March 2 (which happens to be the date they switch back to 763).
So if someone on the westcoast wants to go to HNL in May, it's impossible for them to get a flight.
Your reasoning makes perfect sense but I doubt this is what's happening.