My sister and I noticed that approximately 6 out of 10 those who own an above ground pool:
also own a trampoline:
Often, the house sits right next to the highway or the train tracks.
I have never had the luxury of growing up with a trampoline, but I did have the luxury of swimming in an above-grounder. Kerri Scanlon had one, but without the fancy deck attachment pictured above, so you had to fling yourself up and over the side of it. It took up her entire back yard and I got some major lacerations swimming in that "pool"--I guess blood and above-ground pools are a given.