Notice in the picture, it shows a short piece of tubing pushed into the hub and a very minor tack weld holding it in, together with the ability of the spinner can come loose before caught by the clip. I ALWAYS DO THE OLD FASHION WAY, SAFETY WIRE PROPERLY FITTED FROM WHEEL RIM TO SPINNER.
The clips were supposedly for competition use only...
With that in mind - In the “Care and Feeding of knock on/off wheels, there were a couple schools of thought on safety wiring spinners.
1) Safety wire pulling the spinner tight. Checking the tension on the wire is not really visual, but requires you to physically see if the tension is higher than it should be.
2) Safety wire in the direction of pulling the spinner tight, but left with slack. The thought being that if you visually see that the slack is out of the wire, the spinner is starting to work loose.
In all the years that I have raced, and with my 40 having done nigh on a hundred serious events, I have never had a spinner undo or slacken.
I,ve always used a very heavy duty tie strap, quick to fit tightly through a wheel spoke and spinner arm, and even quicker to cut off for fast wheel change or maintainance. All scrutineers both here and abroad have approved.