yep thats the best option , the other that i had was the chain wrapped round the swinging arm and the sprocket ,, its like having a 100% efficient rear brake come on all of a sudden. Strange as long ago as it was ,,, its still the thought that goes through my mind as I pass 100 on most things ,,, and one of the reasons I ride shaft drives most of the time.Only one. Just lost drive. Took a. Couple of secs to work it out!
Mrs79 has had a few. Couple on track (she used to race) which were fun apparently