I have heard that it is possible to find elemental pools and fish for Essences of Water in the Bay of Storms. My mage will need ten of these in the near future for his Robe of the Archmage, so I am curious about how well the fishing method works.
Here are the precise questions:
(1) My fishing skill is 249 at the moment and I have +105 with pole and lure. Assuming I keep the same pole and lure, what fishing skill should I target before going to the Bay of Storms? Should I level to 300 in Tanaris first, or is there a lower skill level where I will still not miss many fish?
(2) Based on your experience, how many Essences would I see in an hour of fishing?
(3) Is this method more or less efficient than killing mobs?
Please note that I have enough gold to buy all essences needed for the robe, but I don't mind spending the time fishing/farming for these since I expect to get other interesting items in the process. I might also decide to do this with my hunter since he can mine while in the area. (His fishing level is similar)