959
I am aware of the requirements of the 500' rule, in fact I often think of a 3:4:5 triangle from 1st year maths and if I fly at 300', 400' horizontally from my house - then I'm 500' away and therefore quite legal!
Was this guy closer than 500' - well I'd have to say that I would bet on it but I wouldn't go to court and swear on it!
I think that the slow groundspeed precludes a paraotor being my next "pocket rocket".
Stik