General Stuff:
I was wondering how things were going....you are correct in assuming there are going to be a couple of washouts, some partly because they are doing it at the behest of another, some may be doing it as part of a marine biology class. Mostly, what I've found in my personal experience is that kids do it because the parent enjoys it and pushes it. Usually, the fam is on vaca, the mom/daughter are not interested, but don't want the dad to have any fun, so if the dad can get the kids interested, mom will go for dad spending the morning off diving while he pays for her to go to the spa. (Don't laugh; I can't tell you how many times I've heard this from the men on my boat).
Gear:
As far as the masks go, I'd stick with a "low profile" one. Doesn't have to be a Tusa or other name brand; they are pretty much all the same. I've used a "Deep See" mask for years without a purge and probably paid $20 (I get cost for being an instructor, but it probably retails for maybe $40 vs a Tusa or other name brand, which can go for about $80 or more). A purge valve actually makes it a little harder to clear the mask, since the valve creates a wider air space between the mask and your face, which holds more water, which takes a bit longer to clear. Just sayin'. With respect to fit, make sure the mask you try fits your face. Many people buy a mask that is too small (don't get a tri-view mask-harder to clear). When you fit your mask, you want to just put the mask to your face without putting the strap over your head. Inhale through your nose with the mask on your face and put your hands at your sides while still inhaling via your nose to keep the mask in place. If it doesn't move, you have a good seal.
With respect to fins, I do go with Mares. They are by far, the best I've ever owned and last for YEARS. I had my first pair for seven or eight years until the top on one finally tore from using them so much. I use the Avanti Quattro fins. They are a bit pricey, but worth it. It is essential to get a mask, fins and snorkel you are comfortable with. The Avantis will probably set you back $125-150, but worth it. They are not a full foot fin (open heel fin); have easily adjustable straps and are worn with booties. i have also used (and currently own) Mares Volo fins. They are a bit more flexible and the resistance against the water is less (according to some).
As far as snorkels, the semi dry is fine. The "dry" snorkels are kind of a gimmick. If you're submerged, you're still going to get water in it. Don't spend the big bucks on a fancy snorkel. You can pick one up for about $20, if memory serves me correctly. I can't remember the last time I had to buy one, because I used to find them diving all the time. ::lol:: People drop them over the side of a boat, or whatever. Rule: never leave your mask, snorkel or fins on the edge of the boat. Also, don't cheap out on mask, fins and snorkel. You will regret it.
<EDIT: If you're getting a "face hickey" from the mask, it's too tight, or is too small. Loosen the strap and make sure the strap is situated up on the back of your head. If it's down around your ears, the mask WILL leak. It will also leak if it's too tight.>
You don't have to buy a brand name bootie, either. I own 6mm booties because I am all about warmth and comfort (even in the tropics) I am a fan of booties for two reasons: warmth, and if you're doing a beach dive that may be rocky or rocks that have algae, you have more protection for your feet. I am not supposed to promote a website, but if anyone pm's me, I'll direct you to a discount website where you can purchase name brand gear at a discount.
Some techniques that you may find useful: Do NOT press so hard against the mask to clear it. You just want to rest your hand gently on the top of the mask. If you press too hard, you will actually break the seal and get more water coming in through the bottom of the mask. You should not have to blow your brains out through your ears to clear your mask, or your ears. ::lol::
Clearing your ears: you can feel the pressure change in your ears almost as soon as you drop below the surface. The mistake people often make is waiting too long to clear your ears. (Valsalvo Technique). If you try to clear your ears while you're feeling a lot of pressure or possibly pain, you will be unsuccessful, and your eustachian tubes will swell and you'll most likely not be able to clear. If you are feeling pain while trying to clear, simply come up a few feet until the pressure/pain eases, then GENTLY clear your ears. You should not have to blow any harder than a small puff of air. What I do is make my students practice clearing on the surface before they even descend below the surface. I tell them to pinch their nose and gently try to exhale through their nose just enough to feel a slight movement of their eardrum. That's all the pressure you need to exert to clear your ears. If you have to blow any harder, you need to ascend a few feet and try it again. I equalize every two-three feet while descending. Your greatest pressure change will come within the first atmosphere (33'). Slow and easy, don't let anyone pressure you, or compare your progress to anyone else in the class. Everyone learns at a different pace, and in different ways. What works for one, may not work for another. The feeling of holding up the rest of the class puts undue pressure on yourself, thus creating anxiety in an already unfamiliar environment.
For many people, the concept of breathing underwater is very foreign and can take on a life all it's own that panics some. All your life you've been told by your mother, father, whomever to hold your breath under water, and then someone comes along, pops a reg in your mouth and tells you to breathe. ::lol:: This is normal. If you find you're having trouble breathing through your mouth, just plug your nose with the mask on and it will force you to breathe through your mouth.
I wish I was teaching right now.....I really, really miss it. This is a nice outlet for me. I hope that you take what you can use from my writings and that I don't come off as a know-it-all. I genuinely am interested in helping people become proficient divers and always tell my divers that they are going to learn by the book because if something ever goes wrong on the dive, they will be the ones to survive because of what I've taught them. There is a lot that will come with experience and can't be taught. Most of this will come with practice and gaining confidence. The biggest confidence builder for me that got me to the leadership level was taking more advanced classes and the rescue diver/medic-first aid. Most divers only get as far as taking care of themselves (to a degree) and relying on the dive leader to take care of them. In most cases this is the norm, but if something happens to the diver leading the pack, it is important that you learn the important things you need to know to take care of yourself in a dive emergency (and others, if it becomes necessary). Even something as simple as getting separated from your buddy and the rest of the group can be anxiety-producing, but with advanced training, it is a snap to deal with.
I am not trying to step on your instructor's toes, just sharing another perspective. If there's something I've told you that you can use, by all means, go for it. But be careful of what you share with them, as some instructors can be kind of funny about another instructor they perceive as interfering with their teaching process.
::lol:: I always write a book in this thread-I should've been in bed an hour ago.
Happy diving and keep me posted on your progress! (Remember, divers do it deeper!)
