Bring the Fishing Rod! After you have reached the Fishing Platform then head over to the southernmost fishing area and RS gold throw your line. Longbow Ben's golden peg leg is likely to be found after you have caught some fish. Return it to him, and he'll give you the peg leg. Bring all of the items back to Trader Stan and he will tell you to complete one final task. You have to kill the Sea Serpent who sank a vessel carrying the majority of his trade supplies. Now grab the best mage or range of equipment you have and sail on Trader Stan's Vessel, which is equipped with two catapults and two cannons. You've been granted 50 Cannon Balls and 50 Large Rocks , so you must use them wisely. When the captain takes you to your location near Pirate's Cove - Wait for approximately a minute before the Serpent will apear. There are only a few seconds to keep him out of the water So, make sure to take your buy RuneScape gold shots with care. After the ferocious fight, you can bring the serpent's head back to the Trader Stan. Congrats! You've completed the 'A Sailor's Life for Me!' The Quest!