I was gonna say, get a bunch of people to go out and jump up and down at the same time. Not likely, but what a way to go!
There are lots of other geysers & thermal features nearby, to keep you busy and interested while you wait for OF.
Here’s one I’ve posted before - a secret swimming place:
Begin at a parking area about 4 miles south of the park’s North Entrance - it’s located just south of where Rte 89 crossed the Gardiner River. [Lat/Lon: 44.9928/-110.6927] You can park either side of the road - east side preferred.
From the east side parking area, a footpath leads south along the river. Pack your swimming togs + a towel and follow the path a bit more than half a mile, to a place where it crosses a small stream and leads to the river bank. [Lat/Lon: 44.9858/-110.6895]
That small stream is the outflow from some thermal feature, and much too hot for swimming. The Gardiner River is definitely too cold. But where they mingle, you can find a temperature that’s just right.
Swimming here is definitely permitted, but not advertised. As I understand it, you must learn of this on your own - park personnel will not tell you about it.
Another good swimming place is along the Firehole Canyon Drive, near Madison junction. This drive is very scenic and thus quite popular (IOW, often crowded).
I have loads of great memories of trips to Yellowstone…except for 2 days of snow in July one time. I hate camping in the snow.
Be sure to notice where there are paths long ago established, that are now off limits due to changes in the area. And take a special look at the lake there, which has been tilted up at one end by the bulge of magma under the caldera.
I visited Yellowstone only twice, but I saw big changes. It wasn’t until years afterwards, that I learned that some of those changes were actually very new, and relatively sudden.
One other thing: watch out for wild buffalo. They can wander on to the wooden paths you take to view various features, and cut you off from where you are trying to go. And they are NOT tame or otherwise harmless. They aren’t likely to attack you or anything, but don’t think you can “shoo” them and get positive results either.
Here’s a place NOT to swim.