Motor City Kiteboarding

I was up in Oscoda, vacationing with my family, when my niece threw out the idea of going paddleboarding. I had never done this before, and was pretty excited when we found Motor City Kiteboarding (MCK) just 15 miles down M-​23. After some initial legwork to find rates on their website, we tried calling a few times, with no success. No big deal, I thought, we’ll still go.
When we arrived at Tawas Bay, we had to ask around a bit, but finally found the location of MCK, which is essentially just an indistinguishable sign behind a boat repair shop. Unfortunately, Mark (the business owner) was not around, and no one had any idea when he’d be back. The gentlemen who helped us out was very accommodating, and even called Mark, thinking he would pick up if they called (rather than a random customer’s number).
No luck. My girlfriend called and texted saying we would really like to go. Still nothing.
Okay, I thought, we’ll just have some quick lunch in East Tawas and wait around. Unfortunately, by the time we got a reply 2 hours later, rain had started to fall, and we were all frustrated with the entire situation.
For a «business» that’s only open two days a week, and is basically just one guy who may or may not be available, I can cut a little slack, but the fact that you are basically at the mercy of his mysterious schedule is a really poor business practice.
What I really don’t understand is how this business focused so much on a good website and signage, but utterly failed when it came to simple customer interaction.
PROTIP (for the business): You were pretty much the only result for paddleboarding in the Tawas Bay region; you could be making a killing.