Outside the current definition of "off-course participation," a number of golf-related activities that engage participants away from the golf course continue to grow. And they expand the game's reach, reinforce awareness, and help serve as a gateway to participation with other forms of off-course golf and even traditional, green-grass play.

It's more than windmills these days. We weigh in on the mini golf movement, Millennials, latent demand and... Winston Churchill?

As new golf entertainment versions of mini golf crop up, with investment from prominent names like Tiger Woods and Rory McIlroy, it leads to inevitable questions about the impact these kinds of 'golf' experiences might have on interest in playing on a real golf course.