kittyjg:
I was in FL recently and did a few "trust-me" dives with a DM very familiar with Devil's Den, Blue Grotto and a couple of other springs in central FL. All involved some overhead. All were classified as only requiring OW or AOW. I had some apprehension to the dives because of the overheads and swim-throughs, but thought things through, explained my feelings to the DM and felt more comfortable as the days went on.
Probably not the best idea. These caverns are classified OW/AOW safe by the owners, not the general population. Any overhead environment requires special skills. OW divers have died in caverns classifed as "OW/AOW safe".
My question is, I was thinking about, at least, taking cave training for the information, not neccessarily wanting to do cave diving. I don't think I would ever consider going into a cave. Same for wrecks. I quess I just want the information/training for information sake. I thought it might make me a little better diver.
When I said that to another diver (who has several more years of experience than I), he though I was just going to waste my money and time. If I didn't do cave diving, I would forget everything within a few months.
Was he just trying to be macho or was he correct?
Take a cavern course. It's the foundation of cave diving. You'll spend about a day in a classroom and a day diving during the course. In the classroom, you'll learn about cave formations, different types of caves, caverns, entrances, etc. You'll also spend some time doing land line drills. In the water, you'll apply those line drills, learn different finning techniques, safety drills, no mask drills, communication techniques, etc. Beyond the cavern course, you'll just be advancing those skills with things you probably won't need if you don't plan on diving caves.
Everything you learn in cavern can be applied and used on any dive anytime. You won't lose the information or skill if you don't make it into a cavern every week. I live in Arizona and only make it to cave country 3 times a year. But I constantly practice my cave diving techniques in the local lakes. That way I don't lose the skills I learned. In fact, this week I'm heading to the lake to practice line and bottle drop drills. You don't need to be in an overhead to practice overhead techniques.
If you'd like some basic information on caves, read
this. It's about dry caves, but a lot of it applies to underwater caves. Also, don't be surprised if after your cavern class you're already scheduling your basic cave class...