Re: Is sleeping OK?
Well, the "rule" says that you are required to maintain a watch. Most solo sailors interpret that to mean that it is okay to cat-nap, getting up every 15-20 minutes or so to check the horizon. Some people insist that this is unsafe and does not meet the rules. Personally, I don't see a problem with it.
Now, if you go off to sleep for hours at a time... That's a whole different matter.