I've been using one for years. I hope the clamp is improved as it was the weakest part of the setup. I discarded the bottom flexible portion with the clamp and put the top portion in a Windtech "C" clamp after taking the stud out of the clamp. The little spring clip on the umbrella shaft snapped into the hole and then use the set-screw to tighten the shaft in the clamp. Much more solid than the flimsy easily breakable plastic clamp that comes with the chairbrella