Fly fish for quicker and faster XP
Like for non-members I suggest fishing shrimps at Draynor Village, Al Khaird, or even Catherby and banking them.
Just like for non-members I suggest fly fishing trout/salmon from this level. But fishing at Shilo Village would be much quicker if you have completed the Shilo Village quest. To fish tuna I highly suggest fishing at Catherby.
Either fly fish at Barbarian Village or Shilo Village or start lobby fishing at Catherby. Lobsters will be slow, so fly fish for quicker and faster XP, unless you want Lunia gold/more cooking XP.