There was a thread on the SB home page titled "what is DIR". I tried to respond but it disapeared so I followed it here and ty cave diver for that post. Its very good. Im about as far from DIR as you can get but I did get the book you suggest in your post some time ago. The suggestions and advice are sound as has been the same from the DIR people I have gotten any advice from on here. My diving has definatley improved from it even if I dont follow it to a tee. So from a non DIR divers point of view I just want to thank you for all the good advice and your patience considering some of the crap you get the min DIR is mentioned. Hope I dont get in trouble for this post but thanks again!