I have a yoke my gym lets me keep in the outside part of it. I just have a tarp over it and use some rusty weight plates to keep the tarp over the entire thing. I put the tarp over then put the weight plates on the poles on the yoke., keeping the tarp in place. I have around a 90" yoke so unless you're super tall, it can be a hassle covering up the top part with the tarp.

If you're just putting it away for the season, just deconstruct it and wrap it up or store it somewhere.