which you filled the base with water or sand for weight. We filled it with sand and it worked great until - we had to empty and move it. There was no good way we could figure to empty the sand without destroying the thing and emptying it involved scooping the sand out one handful at a time. A huge, time-consuming pain. So there's that.
You really need two people. I put one together a few months ago
by myself and it was brutal. My wife had to assist with a few steps. Also, the directions typically are not great so finding better instructions on line is helpful. I had my iPad nearby to consult the on line instructions.
And you can keep it up all year. I wouldn't recommend exposing it to winter elements if you have a large enough space to store it, but even if you do I would still use antifreeze to avoiding filling and emptying every year
