DOVER — Winners of the $20,000 Dover Launch business plant contest, Tory Welsh and Tobin Twelves, want to open an indoor golf and multi-sport simulator facility in town. “I think we can all agree there’s plenty to do in our area on a sunny day or on a bluebird ski day, whatever it may be,” Twelves said while presenting Thursday night in the final round of the contest. “What about when it’s raining? What about mud season?” The married couple lives in Wilmington. Twelves is a local realtor, general contractor, snowboard coach and golf enthusiast. Welsh is an IT professional who works at the Mount Snow ski resort in West…