Balloon bingo

[DAW89446]

What are everyone's PRs for finding balloons and have you found a place they seem to be more abundant?

I'm not sure what the acronym PR stands for. I'm not a hiker, so I've only found a few random balloons over the decades during my 4WD exploring and off grid camping in the park. I really don't know where they might be more abundant, but logic tells me the southern part of the park, as it's closest to population centers. Any in the northern end of the park would have to cross the Sierra and subsequent ranges from the Central Valley cities and likely would have lost their buoyancy long before reaching the park.