If you make your taming pin out of wooden railing and land your argi just out of range of its attack it'll get stuck trying to go for the argi and then all you need to do is lay by it while wearing ghillie; very easy tame.
Easiest and safest way to tame this is to lure it under water. They stop aggro and you can tame as you please. Just make sure you come up for air every once in a while. Also be sure the water is deep enough.