I've been grinding 4 hours a night the past two weeks and (un)luckily have 3. Tried the loljapanese way, tried server times, tried each area for only 1 hour each, but RNG is RNG. I just try to keep a positive attitude, listen to music, find random hunt mobs between, and purchase Ventures with all the seals I get. I think I've got like 300 Ventures now, lol.