Never lose the locking pin on my Rubbee again!

On a long down hill section (public road in Surrey, rather bumpy due to the potholes) i had my Rubbee off the back wheel. And at the bottom it was on my wheel ... somewhere along the way i'd lost the locking pin (and i wasn't in the mood to cycle back up).

Never again! Here is my solution (ignore the yellow bits, that clip is just temporary until i find the one i want to use again... same for the temporary 'locking pin', i'm not going to ride with that!):

Clip it through the ring of the locking pin, so that if it falls out again i can just pop it back in.