I just got off the phone with Mike W and here's some clarification. Hopefully I convey it correctly. Apparently, the website will be updated to reflect some of this.
As stated before, a winter pass is required. However, the ending date is twofold. First a pass is needed from Jan 2 to
March 31, but the pass will be honored until April 30 to give those that purchase it extra time to get dives on it.
Secondly,
NO pass is required for an instructor
OR any of the students. Obviously, one can't get away with taking a drysuit class all winter long to avoid buying a pass though
He also stressed that he's lost money every winter since he's been there, but has tried to keep the quarry available to the divers anyway. However, to stem the bleeding he has to try something different to make it feasible for him to keep the lights, heat, and compressor running during the cold months, and hopes he hasn't upset anyone.
Just wanted to pass this along.
bob