In reply to PaulJepson:
Second the bathroom scales.
Very easy method and it allows you to methodically decrease the assistance you're getting until you're hanging feet free.
Yes, it is still fingerboading even if you're not fully hanging off your fingers. The concept is based on methodically increasing the load you're applying onto your fingers in a certain grip type over a certain period of time. This load doesn't have to be bodyweight per se.