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I had a 20 year break from diving and I just took the entire OW course again. I was really glad that I did. A lot had changed, and there was a lot I forgot.

So here is a related question. If you hold your breath during a regular commercial flight ascent (which is up to 8'000 feet or so pressure altitude) will you have a lung over-expansion problem? I think this is physically impossible because of the time it would take, but it is an interesting...

Ah, ok. I hadn't thought of it that way. I was just picturing the lungs like a balloon, like in all those science fair projects. It makes sense that the lung tissue would fail before the epiglottis.

One of the things I always wondered is how your lungs actually seal this way? Clearly they do, but I don't understand the mechanism in your throat. When I hold my breath, it feels more like something is closing up so that I can't intake any more air. What I picture for lung overexpansion is...

Well, if you quote the part without the question mark, you aren't going to see it. This is a pointless back-and-forth exchange, and I am terminating my involvement in it now. I do appreciate all the honest opinions stated in the thread. Thanks everyone.

It was a question. I have no dog in this hunt. I'm not trying to make fun of these kinds of programs, or to support them. I am OW certified with about 10 dives to my name. You mentioned in another thread that you got certified as an instructor through one of these types of programs. I'm...

The title of my post is not misleading. The course is OW to Instructor, and it takes 23 days. It was a sincere question about what the more experienced people think about this kind of course. Isn't that what this kind of forum is for? Wow, that is really friendly, constructive advice...

If you compare it to the 23 day course, it is certainly a much better deal. 3 months of training in anything for $5300 seems pretty cheap. However, if no one will hire you, I don't know that you could consider it a good deal.

You may want to check this thread. It is covering a similar discussion http://www.scubaboard.com/forums/advanced-scuba-discussions/343822-ow-instructor-23-days.html The consensus is that no one will hire you with this kind of course if you do not have the experience to do along with it.

Actually, the program title is AOW to Instructor, but the requirements say you just have to be OW. AOW is just a few dives anyway. I don't see that it makes any difference. I don't see where you get this conclusion from. Whether you think the program is worthwhile or not, there are people...

I am actually not seriously considering it. But I have taught a bunch of college courses as an adjunct professor, and I taught high school for a while as well. I used to be a certified jumpmaster. Teaching is one of the most fun things I have ever done, but it doesn't pay well at all so I...

Let's see. 23 days; 2 trips / day @ ~$50/trip. Throw in a few night dives. Call it $2500 for 50 dives. I can see how that might be a better way to gain experience quickly.

I would have posted this in "Going Pro" but I am not enrolled in any professional courses, so I can't. I was wondering what people thought of course like this: http://www.keysidc.com/pkgCoursePriceListing.php 23 days and $4200 to take you all the way from OW to Instructor. I suspect...

If we assume 100' of water, combining GPS and drift gives a circle with 130' radius. That gives about 53,000 sq ft (about 1.2 acres) to search for something that is almost invisible.

Yeah, I wonder what "compensate you for your time" really means. I expect it means that if you find them they will give you $20 and if you don't find them you will get a disgusted look and $0.

(not me) At least they have GPS coordinates: I can't post URLs, but if you search Austin Craigslist for "Scuba" you will find it.

Hey everyone, I'm a old-timer with not very many dives under my belt. I originally got certified in 1980, and the instruction back then consisted mostly of the instructor telling horror stories about people who died by doing stupid things. I had a few dives throughout the years, but not...

Just got as 1200 today and did a night-time pool test. The camera was very easy to set up.