jerryn
Contributor
I am sure that some of you have been following the John Chatterton thread, but in case you haven't, I thought you might be interested in some of his comments that relate to one of the topics in this thread.
http://www.scubaboard.com/forums/3823145-post395.html
I disagree with John on some things, but on this I agree with him. I do it a little different. I have my dive plan which is on a slate and in my head. Because I do similar profiles a lot, the plan does not change too much and I rarely refer to my slate. In Truk over 16 dives between 60' and 210' I did not use my slate at all. I do not do ratio deco except for some small perturbations to my plan. For example, if I'm a couple of minutes late, I know where to put those couple of minutes in my deco. Knowing how much to allocate is a form of ratio deco. Since I am usually more conservative than my computer, this works out well. My computer is really a back up to get me out of the water as quick as I can if I have a problem.
Jerry