With high level characters, maxed out weapons and while making use of 'Tortoise' (aka SEN/SEN/SEN). I've found using enough SAB's to get all the statuses possible inflicted in as short a possible time is insanely helpful, too. It's worth noting that Daze works, so if you get SAB/SAB/SAB done and Daze it right at the end of your status inflicting, you can then quickly Daze it and switch to SYN/SYN/SYN and MED/MED/MED in order to get yourselves fully buffed and ready for a good RAV/RAV/RAV'ing and then finally a COM/COM/COM'ing once it's staggered to 999%. I used Fang, Hope and Vanille, I think.