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"He has to be right at all costs" says the guy with the suicide cord.

+1 on Yes car rental. They have treated me the same way!

I get a kick out of you oh so law abiding people breaking the law in ways that actually could kill someone if a mistake was ever made. And then insisting scuba divers should never hold their breath.

Ask them how they feel about that.

Ask your local power company linemen how they feel about you using that system to power your house. Don't care, do you?

This is my experience.

In the end what it is worth is based on the income it produces plus a premium for living in Coz.

If money is worth anything 5% would require $233 of interest 365 days of the year. Better do a couple of reg overhauls every day above what you need to live on.

Likely going to take a couple of houses.

The buoyancy change is the same per pound of air used. You start out with less lead. Easy to identify a full HP 100 vs an empty one by lifting them both.

So you think it improves the CO2 buildup to hesitate breathing with your lungs on the empty side vs on the full side?

I think I agree. but we are not talking about breath hold diving. We are talking about hesitating breathing with fuller lungs vs hesitating with emptier lungs. Taking a breath and immediately exhaling it and then waiting will not get as much O2 out of the air as doing it the other way.

All good, but the longer you hold the air the more O2 goes to your body and the more CO2 leaves your body. If you doubt me try holding your breath for varying lengths of time and exhale into an O2 sensor.

I think your numbers are good but don't forget that it is total weight, not just body weight. Weight of BCD, weight of weights, weight of fins, etc.

Keep in mind that if you want to get the most O2 out of the air and get rid of the most CO2 with your exhale then you will pause after the inhale not the exhale.

Afrin, used in moderation, only at night, It helps me many more days than they say it can. Use very much and the rebound will be really bad.

I take a Zyrtec every day. I usually use Flonase. I take psuedoephidrine often. And often use a little nasal spray to be able to sleep. I've had two operations to open up my nose. Never again, lots of pain and no gain. Dive without psuedoephidrine? Nope!

A couple of years ago I came through the Cancun airport with 3 computers in my suitcase, all wrapped up with their power supplies. After x-rays they asked me what they were and I told them. They sent me to secondary inspection. Secondary opened the suitcase and asked me what I was doing with all...

One time I was sitting in front of a dive shop in Mexico and decided to turn on my phone. It immediately rang and it was a customer with a service station. He said "listen to this" and held his phone so I could hear the sound the pump made. I told him what the sound was and told him a 3000 mile...

Most places I have been diving the most important card is the VISA.