OP
I was kind of saving gas management for later but now is ok too. The book of course tells them to watch their air gauge but it doesn't tell them anything about what to do with the numbers beyong ending the dive with three to six hundred PSI remaining.
While this may be a viable plan on a 30 ft dive divers are being led on 100 ft dives by resort DM's on their very first dives after certification. This is a trouble area for me. I talk about air management in class but I can't test them on a bunch of math. I do two things. I stress "diving withing your training an limits". Yes that is in the book but what isn't in the book is the fact that some DM will give them the oportunity to do a 100 ft dive or penetrate a wreck their first time out. They may believe that because it is a guided dive that it's ok. I can give countless accounts of new divers getting back to the surface just in time. I also show the video "A Deceptively Easy Way to Die" so they know how clueless some people even DM's are.
I also show them the equipment and gas management that I use for a 100+ ft dive. Since I have started doing some of these things in class instead of comming home and scaring the hell out of me with stories of dives where they were totally dependant on a DM for survival they come back and tell me of the dives that they said NO to.
I had an advanced student recently who was proud of the fact he had done 100 ft dives in the Caribbean and wasn't concerned about the dives he had to do for his class. After questioning him about his dives and finding out how close they cut things as far as gas management I asked if he would have had enough gas to get him and his buddy back. He had no answer other than to say he didn't think so. I strongly feel that I need to give students a heads-up about the subject.
While this may be a viable plan on a 30 ft dive divers are being led on 100 ft dives by resort DM's on their very first dives after certification. This is a trouble area for me. I talk about air management in class but I can't test them on a bunch of math. I do two things. I stress "diving withing your training an limits". Yes that is in the book but what isn't in the book is the fact that some DM will give them the oportunity to do a 100 ft dive or penetrate a wreck their first time out. They may believe that because it is a guided dive that it's ok. I can give countless accounts of new divers getting back to the surface just in time. I also show the video "A Deceptively Easy Way to Die" so they know how clueless some people even DM's are.
I also show them the equipment and gas management that I use for a 100+ ft dive. Since I have started doing some of these things in class instead of comming home and scaring the hell out of me with stories of dives where they were totally dependant on a DM for survival they come back and tell me of the dives that they said NO to.
I had an advanced student recently who was proud of the fact he had done 100 ft dives in the Caribbean and wasn't concerned about the dives he had to do for his class. After questioning him about his dives and finding out how close they cut things as far as gas management I asked if he would have had enough gas to get him and his buddy back. He had no answer other than to say he didn't think so. I strongly feel that I need to give students a heads-up about the subject.