Best way to tame them from my experience on the island is to use metal behemoth gates to make a taming pen. Or to use stone (be aware it may break before you knock it out, so bring spares and get ready to risk life and limb), and shoot from a Quetz platform saddle. Bring lots of arrows, narcs and Kibble (if you're taming solo), and preferably a lot of cross bows or just a high damage journey+ one.
I dare you to raise one!! They are savage if you got two high lvl parents (about lvl 140ish) and you get imprinting on it. The thing will become an adult with about 230% melee and basically one chomp any bronto!!! But on the down side you loose your job and your girlfriend