first kill every manta.
Second equip thief ring, equip your best bow and arrows and move slowly toward them .
Do not get to close.
Shoot it in first person view using zoom, ( if you time well you can get it on its back and get several arrows). If it manages to run away, back away a few steps and wait, with the thief ring equiped it's likely the gecko will run away and come back. Rinse and repeat...
If you have a good bow, it's rather easy ( for arrows use heavy arrow you purchase from Patches or even consider using some of your stash of white arrows).








