1)From a man with a family: hot tub previously with kiddy's poopie and peeie.
2)From a bachelor: hot tub used for…Think about everything you plan on doing with it….Uh, never mind.
If you do decide to buy the one from craigslist, please don't use the extra wire to hang yourself. Electrical wire tend to break when subject to human weight and we wouldn't want to see perfectly good electric wire go to waste. Oh yeah, and we love you. :),