I hate to be a real PIA but not maintaining a watch is a clear violation of international law for a damn good reason, safety of all at sea - how would you feel to find out while you were asleep at the helm you missed the single call of the s/v 10 miles from you as it went down? We all have a responsibility to be there for each other.
I single hand day trips, night sails etc.., but would never even contemplate making a passage without standing proper watches 24/7. Get your kicks on short trips, long trips deserve crew.
How the heck do ya'll get insurance coverage on a single handed passage?