Get a Yakima rack lock.
I used a threaded Yakima rack lock on min. it is keyed and can be threaded down the shaft so it will act as a jam nut on top of the spinner handle. If they want the bottles they will have to cut something that way, and it s unobtrusive. I think the locks come in a pack of 2 and the tumblers are sold individually. Your local large bike shop should stock them
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Brett G
WBCCI #5501 AIR # 49
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1978 Argosy 28 foot Motorhome
Wise men talk because they have something to say; fools, because they have to say something. -- Plato
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