Place: The Western Kholusian Coast (large area SW of Wright)
Bait: Squid Strips
Macro:
/ac Cast <wait.10>
/ac Hook
Use Double Hook manually, no Identical Cast, everything that bites within 10 seconds is a Blue Crab.

This saves you a lot of Squid Strips. It might bite after 10 seconds, but then you get other fish as well, wasting valuable Squid Strips.