The TDI Into includes both Single and doubles so no waiver is needed, you should not have a problem with doubles at Ginnie.
It is 1/3 in single and 1/6 in doubles
It is a Single primary guideline
Yes it does say about advanced topics! - Introductory Cave!
There is nowhere in any sport or profession you would learn advanced topics in an into class.
I am not an Instructor for NSS-CDS but I believe that the change from Into to Basic was to identify the new standard for Doubles. So I don’t believe you need a waiver there either.
As far as I know IANTD is the only one now that you would need a waiver for doubles in Intro.
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"Those who hammer their guns into plows will plow for those who do not."
~ Thomas Jefferson
No waiver needed for IANTD. They print "In Doubles" on the card, but the instructor needs to let Patti know this on the application. I don't know if TDI does this or not, but I do have a couple of friends that were almost not allowed to dive Devil's because they didn't have anything that said single or doubles on their cards or in the form of a waiver.
Rob Neto
Chipola Divers, LLC
Check out my new book - Sidemount Diving - An Almost Comprehensive Guide
"Survival depends on being able to suppress anxiety and replace it with calm, clear, quick and correct reasoning..." -Sheck Exley
TDI cards do not distinguish between being trained in doubles or singles.
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