trampoline parks are popping up, including here in the bay area, generating hours of play time and jobs claudia cowan with the new business model. >> reporter: this is one of many across the country offering fun, fitness and jobs. across the country, trampline centers are inviting kids of all ages to defy gravity and play ball and welcome up a sweat. >> they have a great time and it's great exercise and they are exhausted after an hour. >> reporter: really fun i like it. >> reporter: more than 8,000 people have bounced through the sky zone since it opened in las vegas. from florida to arizona, california and beyond, customers aren't the only ones jumping for joy. >> i saw the ad on craigslist and i was, like, i love trampolines and this would be a cool job. >> reporter: tease indoor thrill parks are employing hundreds of people from designers and builders to the so-called flight staff that check people in and hand out special shoes and wrist bands and keep an eye on airheads. >> wee supervise and make sure no one is hurt. >> reporter: opener plans to hire half a dozen people to keep up with demand. >