Auxiliary outside canopy?

We've had lots of the instant up expandable canopies thru the years & never go camping without one. Normally I put one over my cooking area (2 grills, stove, & Dutch oven area) and use a separate screen tent over picnic table. Quality & usually more $$ will serve you longer. I agree, straight legs are better. After normal use the material stretches a bit & will hold water when it rains and could cave in under the weight of the water. I've used brooms, sticks, or whatever I could find to put between the frame & top to create peaks so the rain runs off. Now I keep 2 (4 ft.) shock-corded tent poles in the bag & they work very well. I also save all our old shower curtains & hang them up in the canopy if I need ‘em. Good investment at our place, use for tailgating, gatherings at home, sporting events, etc.