Step 1: Download WoW Fisher (fishing bot)
http://www.wowsharp.net/forums/viewtopic.php?t=412
Step 2: Get about 100 lures, sit in one spot, start the bot and wait until you have 300 fishing.
Step 3: Buy even more lures (+75s are the best value) Also get the +2 fishing enchnat to some crappy gloves.
Step 4: Go to Bay of Storms (Azshara-North/East of Orgrimmar) It's a little tricky finding a safe spot, but I always fish standing on some ruins if that helps. Bay of Storms has the best drop rate of StoneScale Eels. Let the bot run during the day/overnight.
http://www.thottbot.com/?n=30434;sort=d ... sort2=name
Step 5: Check what you caught! Go to Orgrimmar/IF/Gadgetzan and sell the StoneScale Eels and any other misc. crap you caught. Alchemists use stone scale Eels, so they're usually in high demand. If it's a slow day on the AH, StoneScale Eels can sell for as much as 1g each. But if there's a lot of people selling them, it may be 50s a piece. Either way it's a nice profit.
Some people may not agree with me letting the bot run during the day/over night unattended, but If you find a nice isolated spot (bay of storms harldy ever has more than 2 people in it) you wont get reported.
I would also recomend setting up a chat tab that only listens to /say, emotes, and /tells. This way if you come back and found some one was saying something to you, you can send them a tell saying that your 5 year old cousin was fishing for you or something, lol.
Good luck.
(Glady excepting reccomendations for a premium account
)