The way i used to do it when i worked for ballys is just talk to people. Get to know the members. Once you get to know them they will be more comfortable buying stuff from you. Body fat testing is a good way to pick up clients as well. You have to be creative. Another great way is to just walk around the weight room and help people out. If you see someone doing something wrong, Correct them. Show them the proper way to do the exercise then try to set appointment with them. I hated prospecting for clients, Even though i was pretty good at it. This is why i train privately now. Good luck