Yep I concur with what Hugh says about the structure...certainly not the best in terms of well structured.
As for the instructors, I haven't had either of the ones that Hugh mentioned so can't comment. I'll PM you about the rest.
As with Hugh, you get out of it what you put in. It's not an easy course and I think alot of it is down to your own dedication, the instruction you are given and also the structure of the course. It is a little scattery in terms of some CBT then some fixed base etc.