Have dove with a DIR diver and am diving with him again tomorrow. I like the way his rig looks and as I was planning on going to a BPW soon he's got me seriously considering fundies course. He took his from Bob Sherwood at Dutch Springs. I realize that I could ask this in the course should I take it but as I was assembling my gear for tomorrow dives the question came into my mind about signaling devices. Is a Dive Alert or Hammerhead uw device consistent with DIR philosophy? I always dive with the Alert and will put the Hammerhead on when working with students as a DM.I also always carry an SMB(DAN signal tube) and finger spool even if I do not have my primary reel. Just curious. Thanks