I believe the common definition of autopilot is ANY electro-mechanical device to automatically steer a boat. There are different types of autopilots like tiller pilots, below decks autopilots or even wheel pilots but these are all autopilots.
So to pick this particular nit, a wheel pilot is a subset of the general category of autopilots.
The water is always bluer on the other side of the ocean.
Booth's rule#2: "The safer skydiving gear becomes, the more chances skydivers will take, in order to keep the fatality rate constant"
It's very possible that trailing a line may result in an increase in the chance of you going over the side. But impossible to know as there is next to no data. everyone is guessing or going "Look, he does it!!!"
Personally I don't use one solo or otherwise, I'm with the "overboard is a 100' drop with crocs at the bottom, you're dead."