>>56276533Helper Boost Legendary + 3 matching BFS helpers + E4E healer seems to be the best way to go.
So you'll want Blastoise, Feraligatr, and then your choice of Golduck or Vaporeon, or possibly Slowbro / Slowking with maximum ingredient finding rate and tails on both 30 and 60.
Trying to farm Slowpoke tails via a Suicune team might not be a solid strategy though. A good Feraligatr provides much more direct gains on Cyan Beach.