Over on the MR forum, there's the trick-it thread devoted to obscuring means by which you can dump YQ by applying 3X'es/1X'es, double stackers, etc. on certain OTA's. The end goal is to reduce your spend while maximizing your travels.

Here we have a new irony: there be a new UA trick-it thread devoted to how you can fly non-UA *A carriers while applying a UA-metal 3X for the purpose of achieving PQD, and listing which OTA's will issue such tickets on UA stock.

Quick: Which OTA will issue a UA ticket for a P/Z fare on the non-stop Norman Mineta to Sushi, assuming a UA 3X thrown in? Will the Big O ticket it as a UA flight if I make my 3X Golden Gate Bridge to Hollywood?!