I suppose the argument could be made that sailing a spinnaker boat solo is -unseamanlike- in the first place! I know during one of the around-alone races there were some other sailors who were saying that the solo world sailors were un-seamanlike, because they could not fully comply with the regulation to always have a "watch" on deck, since at times they would be down below, asleep...

All in all, I'd rather avoid trouble than seek it.