My buddy back in the day would dive off the coast and in the keys using a Brownings 3rd lung. We where planning on going with another one to do some shallow diving (less than 40 feet or 30 feet) at the reef's but one glance at their website gave us sticker shock. We realized that we could set up a "Kayak Hookah" system using your dive tank at the surface and long hose's. The problem I see with that is with your Pressure gauge at the surface with your 1st stage you would have to have that monitored by somebody. Question is this, is it possible to attach your pressure gauge or maybe your gauge set up at the second stage (regulator)? Would it give accurate readings? I was just wondering. I don't want to "try it out" under 30 feet of Florida's finest blue:eek1:.