I've had a creaking Omnistor since I bought our van over 9 years ago. I bought a Fiamma Motorhome Awning Tie Down Kit, 11m. It said you can use it over the extending arms or over the awning canopy. I have always used it over the awning canopy. It comes with a spring loaded end, so you can make sure not too much pressure is applied to the canopy. In 9 years of use (800 nights of camping), I use it every time I get the awning out, the awning canopy is still in one piece, and creaking is negligible. I do not leave the canopy out if there is any risk of gusty winds though.
