If you want to keep one then do so, if you don't then don't. I never have and I cannot recall ever being asked for one, I think the only time I was asked I flashed him the I card. I have never really been asked, my wife was asked once recently and she told them she was me and they dropped it.
I suppose if you are doing high level tech diving, rebreather diving, diving beyond your ordinary sport diving certifications I can see why you would want a log and I can see why as an operator I might ask to see it for something like recent experience with a rebreather.
I think the main thing a log might be good for is recording your memories, conditions etc for future reference, but, I don't care, too much work. If it comes to the point I need a book to remind me of my memories I probably want remember how to read either so.
N
I suppose if you are doing high level tech diving, rebreather diving, diving beyond your ordinary sport diving certifications I can see why you would want a log and I can see why as an operator I might ask to see it for something like recent experience with a rebreather.
I think the main thing a log might be good for is recording your memories, conditions etc for future reference, but, I don't care, too much work. If it comes to the point I need a book to remind me of my memories I probably want remember how to read either so.
N