Bear in mind you said a solo sailor sleeping. It is that singular instance I'm referring to. As a single sailor and sleeping, you are on a trip of more than 24 hours. So that pretty much means off-shore. A 24 hour day will put you 100 NM or more depending upon your boat. Mostly this would be the case for crossing oceans, but one could be doing a long coastal cruise. If I'm doing a long coastal cruise, I would not be less than 50 NM from shore if I have planned to be sleeping. More likely I'd have planned stop-overs where I can rest. However, in the case I was running further, I would be working in polyphasic sleep mode. I most certainly would not be totally reliant on any technology including AI.
There is no need for additional monitoring of AIS or RADAR - AI will give you nothing more than those units already provide. You could connect up a system with AI and these instruments - but you aren't getting any additional usefulness.
VHF once you are 50 miles or more off-shore is not even going to be on as there is no signal out there anyway if crossing oceans. If doing a long coastal passage, if you are crossing shipping channels, you aren't going to be sleeping. You had better plan better. In the case where you running with your VHF on, why would you need AI? You would be monitoring channel 16 or maybe your unit allows you to monitor a couple channels - I'm not seeing a thing AI does for me here.
Then you go into wind, motion, water detection, etc. As a solo sailor, I'm already monitoring that just through my brain. There are no changes in the parameters of those that I won't notice without AI, at least that are going to put me in danger.
Don't get me wrong. I'm not a luddite. I have actually worked fairly extensively with AI. Enough to know areas where it is excellent, and areas where it is not. Well, at least some of each, I certainly don't know them all...
Sorry, in this application - I don't see any advantage to setting up a whole system just to add in AI.
dj