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Thunderbird Club

You need one. I'll contact you.
I got my drysuit built without one. It's got a convenience zipper. I wish I hadn't got that zipper. Everything has to come all apart anyway, so no point. I figure if women can dive in cold water for an hour without a p-valve, I should be able to dive in cold water for an hour without one. If I was going to be using two tanks and staying down for a couple hours, that would be a different thing.

Now, a wetsuit is a completely different situation, and we don't have to get into that.
 
I don't generally go below 100 feet in a drysuit anyway, and come up really slowly. Staying hydrated is important to keep from cramping, more than anything else, at least for me. Everything about diving is a balance anyway. I'm not especially concerned about DCI. If I can't make it to the surface, I'll just come up wet and nasty. Washing the suit sure beats DCI.
 
I got my drysuit built without one. It's got a convenience zipper. I wish I hadn't got that zipper. Everything has to come all apart anyway, so no point. I figure if women can dive in cold water for an hour without a p-valve, I should be able to dive in cold water for an hour without one. If I was going to be using two tanks and staying down for a couple hours, that would be a different thing.

Now, a wetsuit is a completely different situation, and we don't have to get into that.
So old man Lloyd Bridges always seemed to have two tanks on Sea Hunt. Did he use a P-valve?
 
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It helps that the 5-string version is the exact same size than the 4-string one.
View attachment 7291818
My fiver for comparison.
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