I'm a CMAS OW diver with around 100 logged dives. I wish to further my certification, in particular become an instructor. However, the diving season here in Nova Scotia is very short and my job often keeps me away for much, sometimes all, of the summer. I am considering Hall's Career Institute in Marathon, FL. Here I could complete a self prep period, and after a 3 week intensive course at the dive centre, would have full intructor certification. Any advice or comments on these Career Institutes, Hall's in particular??