Also something to keep in mind, I and am sure Capt Walt would agree that we would not take clients out in those conditions as described above, however, conditions can detoriate quickly which is why I am constantly monitoring the onboard satellite weather.
When my buddies and I used to dive all the time on the weekends, we would always force dives when the weather was marginal, but that was us just having fun. We only had so many weekends to dive, so we wanted to get as much diving in as possible regardless of the conditions. With clients, we only dive when the weather permits a nice ride and comfortable diving.
Answering your question above about diving in November, it is definately a much more hardcore kind of diving. Generally the weather is colder, the water in the mid to lower 60's, and the seas never seem the lay down. While the visibility will improve with the cooling ocean temps, the level of dive precision goes way up, and margin of error decreases.
All that being said, diving in the warmer months when timed properly, on a a big boat, can be done with relative ease. We have completed hundreds of dives offshore locally, and love it everytime.
-Michael
BTW: terrrydive1: I checked out your website and your training prices are awesome. I appreciate how you stated there would not be any hidden costs, that always used to bother me about some of the LDS from around the country I would deal with. Glad to hear about another operation in the lowcountry.