I wasn't going to reply to this anymore, but I wanted to address a few things without seeming angry and clarify a few points.
I stated that I have seen 4-5 people quit diving during the pool sessions, and I have. Not all of those people were at the shop I work at, or even with the same instructor. All of these people were very uncomfortable in the water. One couldn't breathe through a snorkel without hyperventilating.
I have a few points that I would like to make. First, I feel that being a good swimmer contributes highly to a level of comfort in the water that is fruitful in diving. There are a few publications that support my point of view, including
The New Science of Skin and Scuba Diving,
Basic Scuba by Fred Roberts, and the NAUI open water diving manual. I am not saying that a proficient swimmer is 100% going to be a good diver, but it helps. If it didn't help, there would not be any swim tests for any of the recreational scuba certifications. I understand that my web page had a tough swim test on it. The 500 meter swim test equates to roughly 1,640 feet, a little over a quarter of a mile. This is opinion based granted, but there are plenty of incidents on CDNN where people get in trouble, and could use the ability to swim in their favor:
CDNN :: Missing Scuba Divers Rescued after Five Hours Adrift
This one is where a group of divers spent five hours adrift at sea over 5 nautical miles away from shore before being located by helos.
CDNN :: Search Resumes for Missing Oahu Diver
Here's one where they look for a guy two miles offshore and didn't locate him.
The bottom line is, there is a reason to be able to swim. I'm not expecting people to agree with the distance of 500 meters for a swim test, but it certainly suggests more physical ability than being able to swim 200-300 yards. Being able to tread water for more than 10 minutes would also be beneficial in cases like the above mentioned. The water treading exercise on my page advocated a 30 minute minimum, as based upon all of the research I had done, all of the CDNN incidents where someone was lost at sea were definitely longer than 10 minutes. Obviously, one cannot expect someone to be able to tread water for hours in a scuba class, but 30 minutes is a reasonable expectation.
My second point, is that being comfortable with an artificial airway like a snorkel is useful to being comfortable in the water prior to being a scuba diver. There are also several manuals which emphasize this point of view, including
The New Science of Skin and Scuba Diving, Basic Scuba, and others. I have also had to assist people who were uncomfortable in the water by helping them learn to swim or snorkel enough to be comfortable. I'm sure many of you have some stories that would support this point of view as well as oppose it.
It just bothered me that I took down a site that encouraged people to become adept at swimming and snorkeling before they become divers. I agree that many people possess the ability to pass an open water diver course on the first attempt. I was that way, and many of my friends did it the first time as well. However, what's wrong with putting up a few exercises on the internet and encouraging people to learn how to use a snorkel?
Many people on here also questioned why I would post such advice when I am not an instructor in diving. I never claimed to be an instructor, or attempted to seek remuneration for my site. It was just some friendly tips on the web.
Anyway, the site is down so it is irrelevant. I just didn't want anyone to think that I just gave up because people complained. There are plenty of people on this board whom agree with the point of view that you should have to swim to dive, and that watermanship is a good set of skills to have. While I took the site down, my point of view hasn't changed. If you have compelling arguments for why the average diver only needs to swim 200-300 yards and tread water for 10 minutes versus being more proficient, I welcome them. Furthermore, if you have other compelling arguments for why people should not snorkel or skin dive before an open water scuba course, I'd like to hear those as well.