Open console and type in jet(); to start and jet(); again to stop, waste of a download in my opinion anyway, for people too stupid to figure that out
for you!.
Auto-Jet controls your jets so that you will float in one spot, if you just do jet(); then you will just keep flying upwards. You could say this rapidly calls jet(); and times it correctly to stay afloat.
Finally.
Just one question though, are the jets stable enough to record a macro?
I'm not sure what you mean, build macros depend on your rotation, not your upward and downward movement so this should be stable enough?