Blueberrry, the advantage of working with a natioanlly cerrtified coach/trainer is that they will truly understand how to work around injuries.

I mentioned our ( I go with DH) class is at PT/Sports Training facility. We started going after DH had finished his rehab after his bike wreck. He had broken his clavicle and pelvis. Even though he was "done" with PT, he was a mess. He couldn't even stand on one leg at all. The trainers really understood his limitations and where he wanted to go. The day he did his first pull up there was tons of applause. I suspects someone with a weekend worth of training will not understand how to work with these kinds of limitations.