I have found that if your lvl is high enough a great way is to harpoon tunas and swordies on karajama. to start just bring 30gp and your harpoon, fish until your inventory is full, sell the tunas to the general store, continue fishing. Once your inventory is full of swordies lumby home port, bank, run back to port sarim and repeat. note: you may bring an axe and a tinderbox if you want cooking exp as well