Very very simple my friends, not fast, but this method is for NO TIME WASTE.
Tools:
Fish Bot
Auto Clicker
2 Acounts
How to:
Set up one acount close to a LAKE in BOREAN TUNDRA, have it fish on the lake.
Set the second Acount with a char on the water of the lake in front of your Fishing Char.
Choose a location where you have mamuts wondering by , there are plenty of them.
Set the Second acount with the autoclicker and make a macro to target the Calfs or the Big Elephants if you know you can always survive it, have the char pulling and killing without moving.
Try to get the char underwater, or get a gnome .( you can also get waterbreathing elixir to get the char completly underwater soo it does not mess with ur blob)
Set First Acount with the fish boat, turn both on.
Done
Now the first character will be fishing and the 2nd will be killing mobs and dropping POOL OF BLOOD, wich has a droprate for the turtle.
Just leave computers on for long enough to get it
Catching the Sea Turtle Mount - El's Extreme Anglin' - WoW Fishing Guide