In my opinion the best way to taim a giga is place don’t a square of metal Dino gates pick up one that’s in the Direction of the giga and place a large bear trap. Bait it into the best trap then place the last gate behind it. As when it’s traped in bear trap it can’t attack. Then your free to nock it out. Keep in mind they eat a lot so it is a pretty quick tame. But be carful as a high level can one hit you through goof flak.