When I KO these things I like to take a mindwipe beforehand and pump 1k+ oxygen. 150 weight. 350 stam. Makes the mosa easy to kite and solo tame.

When tamed.. beware of jellyfish. Will knock you off and paralyze mosa. Lost amosa because of this. Though I didn't have a tool or weapon to fend off the jellyfish to save the mosa.