do I need a failsafe? (no as far as I know)

Answer is yes James. In the FRA rules and Roaming Robots Rules. I would advise to have one. You will need one at Inspire.

I am worried about that you are boasting you have a powerful feather flipper, able to flip a heavy out of the RW arena - and you think you do not need a fail safe - very worrying James.

Mr Stu