An Indiana man sketched a backyard pool on a napkin after a 1.5-year installation wait; two years later it became a 60,000-gallon private water park now renting for $140 an hour

• Pic credit: Swimply/ MandyPlenty of people dream about a backyard pool.
• On the east side of Lake Wawasee in Cromwell, his home shares its grounds with a 60,000-gallon private retreat that has waterfalls, a slide, a zip line and real palm tree trunks.