OK I know it's out of season but thought you might like to see my rendition of my umbrella brackets. The bracket Deere sells is a one size fits all and just didn't cut it. The idea was to make quick and simple to mount. I think I accomplished it. Made it of aluminum and powder coated it in ultra durable gloss black.
I like the umbrella because it is easy to mount and store say versus a cab or hard canopy.