Look at the average time a client has been with you. Most clients love using a trainer but it becomes a financial burden they cannot continue forever. With Custom Training you can have a client work with you one or two days a week and then work on their own with workouts you have set up through Custom Training.
We are finding numerous clients that have had no intention of renewing with a trainer but have stayed because they could reduce the cost by reducing the number of times per week with the trainer but get his expertise on all their workouts. Long term clients are your best sales tool. Consider requiring a client to work with a trainer for sixty days prior to being allowed to work on their own with Custom Training. In sixty days you can have them working with the form and pace you want from the client.