I wouldn’t necessarily shy away from what is becoming “trendy” in fitness, as long as it is a safe and effective form of exercise for your particular area of interest. Providing something that people are talking about and looking for can be very helpful while you begin to build your business. Essentially, this can easily help you create a client base. Yet, with the “trend’ there still needs to be knowledge, education and the ability to apply what you learn (professionalism that sets you apart). The “trend” might get you clients, but it’s YOU that’s going to keep them coming back. Also, you might want to look around and see what’s not being offered in your community – “fill a need” so to speak. 🙂 Good Luck!
I would be wary of using or following a “trend”. Your business model should be based off of your expertise, passion, education, and knowledge. You want to establish yourself as one of the best in your field because your reputation will keep you current even when all of the hype and hoopla disappears.
That said, you can find great article on general business practices and ideas here on IDEA, ACE, & almost any other reputable fitness agency.