If you and a few other tribe mates have 150 perfect tamed rhinos you can use the charge to kill gigas, you charge straight through it and don't get stuck, so it takes thousands of damage at once with a full charge making fighting gigas much easier.
When KOing just run in circles filling it with tranq arrows or darts(high level) this is the way to cheese this Dino’s taming. Even someone that just got into a world with good movement speed could do it easy. And the Dino’s are super op when fully charged. This will help ALOT :)
Just build a small 3x3 taming pen with stairs leading in from the outside then hit it with a tranq dart or arrow and jump on and argy and repeat until it’s in the pen then just keep hitting it with tranqs