Winter is coming. But that’s all the more reason Kyle McGee wanted to get his second Denver indoor golf facility open this week. Golfers will need a place to keep playing when the fairways go dormant and the greens freeze over. “With the boom in golf, there’s no shortage of golfers. But there is a shortage of tee times,” said McGee, who opened Optimum Golf in North Park Hill in 2019. He is getting ready to open a second location in RiNo at 3563 Walnut St.