Uh, who mentioned certification? This thread is about instructor prereqs, and the posting for DM's is in the same context. Everybody knows you can't get a DM with only 50 piddly dives . I only know one place that'll accept students for entry with less than 65. We must have over a dozen threads on this topic.mars2u:I went back and checked my Instructor manual to ensure that I wasn't wrong.
I was correct in my statement...it's not 50 dives to get certified as a Divemaster. To qualify to begin the Divemaster course it's 20 dives. To get certified as a Divemaster you have to "show proof of 60 logged dives documenting experience in night diving, deep diving and underwater navigation".
Regarding the mask comments, they were not meant to be taken so literally, certainly not enought to merit detailed reply posts. But it looks like that's alleviated.
Back to mccabecj's orginal question:
Out of the dozens of instructors I've worked with over the years, the majority of them got into the field for the allure of travel and adventure. They're mostly outdoorsy types; under 30 when they became instructors. Several of them took the IDC as that was the only way they could work as "DM's" on liveaboards. A lot of instructors rarely teach anything but fun specialties. A lot of folks will avoid teaching basic-level certifications if they can avoid it, so don't feel that being an instructor means you have to teach newbie courses. You can progress past that pretty quick if you choose to.
As others have posted, being a professional rec diver means that you have to pay annual dues, and if you ever lead or teach divers, annual group liability insurance. Insurance costs a lot more for (active) instructors than DM's, which is a major reason why many DM's er, stay DM's. You can often get around this if you work full time at nicer LDS's or liveabaords, but the price is tethering yourself to the shop/boat.
There's other options out there for great diving opportunites that do not require going pro. Ever thought of becoming a scientific diver through AAUS or NOAA? If you become one of these divers, it opens up a whole different arena. You can join research expeditions, participate in regional projects, or get access into restricted areas. Scientific diving focuses on bettering your diving skills and performing unusual underwater tasks in conceivably unusual areas. Underwater archaeology is included here. Nature-wise, organizations like Greenforce and Earthwatch offer their own research-grade diving programs, which I hear are pretty spiffy. Check out your local universities to see if they have any local or study-abroad diving offerings. Many do. I know that with Greenforce, previous students are often asked to stay on as instructors. Heck, with my own field program this summer in the Bahamas, I had a previous student return back as my marine biology intern. I had him leading other divers and co-teaching underwater lessons, and he had just turned 18!
And if it's really bettering your diving that you're after, there's always those DIR-F and related courses. Everyone seems to like them. I'm half-tempted to take one myself.