Exactly.... heavy steel doubles teach you REAL quick how to stay in trimCalifornia Diver:
Twin Tanks Training
- Thread starter Midthere
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That and I noticed a frog kick seemed inherently more stable than a from the hip flutter kick.
You might want to look into weight training if you have to carry them far on dry land. That is the biggest difference going to doubles was for me. If I don't weight train, I will aggrevate my back carrying doubles unless I'm real careful, which I'm usually not. Age is a factor there, and tenacity too, but not laziness. If I were lazy, and I needed to carry them far, I would hate doubles. You could dolly them though.
Also, you will need to understand leak isolation procedures. I use the following with my manifolded doubles with isolation valve:
1)isolation closed, leaky side closed, isolation opened
2)isolation closed, wrong side closed, wrong side opened, leaky side closed, isolation opened
All of this will affect which hoses work after leak isolation, so you will need to be able to handle that too. If you dive with an h-valve single then some of those skills carry over. Otherwise it is a simple matter of remembering how your gear is rigged: for me I may need to switch to my backup second stage and lose power inflate, or lose my spg and backup reg, depending on which side is leaking.
Or you can just rocket to the surface when one of those multitude of additional failure points
fails :05:
Going to doubles now allows me to dive beyond NDL, so you may need to become more dilligent in your dive planning and adherence.
Also, you will need to understand leak isolation procedures. I use the following with my manifolded doubles with isolation valve:
1)isolation closed, leaky side closed, isolation opened
2)isolation closed, wrong side closed, wrong side opened, leaky side closed, isolation opened
All of this will affect which hoses work after leak isolation, so you will need to be able to handle that too. If you dive with an h-valve single then some of those skills carry over. Otherwise it is a simple matter of remembering how your gear is rigged: for me I may need to switch to my backup second stage and lose power inflate, or lose my spg and backup reg, depending on which side is leaking.
Or you can just rocket to the surface when one of those multitude of additional failure points
fails :05:
Going to doubles now allows me to dive beyond NDL, so you may need to become more dilligent in your dive planning and adherence.
PerroneFord
Contributor
When I first put on the twin 95s, the weight on land was obvious. Fortunately, I have legs like tree trunks so it was no problem at all. Honestly, I think I could walk the 121s without a lot of trouble. I think I am going to get 108s for my personal use next year. But I'll make do with twin 80s this winter and next spring/summer until I get the cash.
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