Yasuo is actually a must ban (this is not a joke)

It doesn't matter if one of your teammates hovers him, you need to ban yasuo. A person that plays yasuo is inherently uncooperative. You have a very slight chance of winning with a yasuo on your team. It's not an exaggeration to say that playing alongside a yasuo will be a 4v6 scenario. Why 4v6? Because a yasuo is worse than an afk, he will help get the team fed more quickly with the gold from his deaths. The best you can do is ban him, and then when he trolls you you can either dodge or file a report after the game so that he will be banned for other people. But you may ask, what if it's a good yasuo? Well then they will be equally skilled with other champions and it won't affect your chance of winning. Good luck on the rift!