This thread started out with the Bright Mount. The instructions do cover concrete. Sense I do have 3 of these types of mounts I can say they are very nice for the price rage of them how ever the complete system weight is around 100 lbs, holds 4 large panels with a total weight around 300 lbs. At 90 MP wind, any thing is possible. Your talking about tornado force wind. I like to be able to move mine around or inside the barn if bad weather is on it's way. The cost for my mount is reduced and is not permanent. Here in OH, any thing permanently affixed to the ground is considered a structure and is taxed accordingly to the SQ FT on your RE taxes you pay every year. I think the concrete pillars in my case would be best used with a hook in each to cable down my trailer frame if pored flush to the ground.