Caravan.

Except post-patch night where acquiring seals is the only real new addition. In which case waiting is. Let the caravans cool off for a few days then go in for 5 hours and get all the seals you need at once instead of getting a single run in every hour because 40 people are camping the Chocobo NPC.

can also do Toto but it is meh and you need 2 people.