gonna be a bit of a problem with Peacock wanting cards on the dash board eh? I can see it for all of the bs certs from the recreational agencies, but for important cards I'll take plastic. I carry Nitrox Diver, and Technical Cave. If those three cards don't get me what I need, something is seriously wrong. Add DPV card if you dive Ginnie regularly, and maybe an AN/DP card if the people don't understand Technical Cave to get O2, but other than that, only other one you might ever need is a professional card if you're actively teaching or DM etc. I applaud them for at least giving the option. I didn't have a whole bunch of cards ordered because I knew I'd never carry them so didn't waste the money.