Protec in Playa uses IANTD so that's what I have for my cave certs(Prism 2 too, from Dive Gear Express). The manual was pretty worthless, but it didn't make any difference anyway. The instructors were great, and they issued the cards on the spot.
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Sure most tech divers this is nothing special but shows how easy scuba looks when you have honed your skills which all comes back to just getting wet regularly !!
@GDI
Can you recommend an agency not surrounded by drama, corruption, and mutiny for quality cave training?
I got my Cavern card through TDI and that's who I plan on sticking with for future classes. I plan on taking Intro and Full Cave through TDI just to keep everything uniform, along with future classes like Adv. Nitrox / Deco Procedures and Trimix certifications... It was easy (well, dealing with TDI... the instructor worked me over, LOL), no drama, and I got a temporary paper card immediately, with the plastic card coming in the mail within about a week.