OK. So sumo knots. This cut, you really don't have to worry about it looking like a boring, pulled down ponytail that's like peace out. So anything that you can get back at this point is going to look pretty cool because of the length.
So my suggestion for you, having longer hair, if you do want to wear it up is having this part really tight. I'm putting it in a ponytail and through the second time around pulling it halfway through with the flair of the ponytail at the bottom.
So you don't pull it out so it's like a bun. And this is something guys probably won't do, but I prefer to do, is pinning it down so that it's a little bit tighter and less a ponytail or a pompadour. So it's pretty straight forward. It's like high up and just tacked in. Real simple.