Dave
I haven't had the canopy on long enough for test results
i haven't noticed the vibration, i mounted the canopy to the frame with neoprene washers to reduce vibration and offer some waterproofing It seems quite rigid although it is aluminum. i know if i hit anything it's all over, but the price was right for the materials $6.00 (MM bolts) I had the green paint already from other projects 38.95 a gal So i won't be too despondent it fails It took about 2 hours to fab 1 to install