Played under many of them, Donny. Problem is, except at noon, the coverage gets spotty for a couple of people as the sun moves around, and they are a tight squeeze for a duo as the sun goes down!

Plus, unless you have them anchored to four VERY heavy water barrels, the first Gulf thunderstorm that comes up, they fly off and hit some poor customer! Usually, a storm comes, you want your gear to be the first priority to pack. This thing's more a liability than a benefit, sometimes...

It's usually better to stipulate the venue provides the cover, then it's THEIR worry, not yours.