As mentioned, even the 1x don't track perfectly over longer time frames. If it's something you plan on holding for awhile, you might be better off buying a straight DITM put or even a put spread.
I looked at the inverses.
Always see the down direction easier than the up.
So I tried one today.
It's a choppy one.
I'll report back when I see how it works out.
Hope I don't end up with stomach problem from it