I used to use the lattice set up with three 2x4 x6' poles with a foot square 3/4" plywood base on each and stapled the lattice (2x8) across the long way. Three 2x8's gave me 6x8 ft of display space. Got to be a bother setting it up and taking it down each show.
I finally broke down and spent some $$ on nice metal grid display panels. Check out
www.storesupply.com. 2x6' panels are $17.65 each. I purchased 4 of them. With them you can set them up straight across the back of your e-z up, or 2 panels at 90 degree angles in 2 corners. You can also make an "L" shape if you're limited to a 6' space or make a box with all four panels. Depending on how you set up your booth and your space area, sometimes you can use both sides of the display. I found that these panel are pretty versitile for both indoor and outdoor shows. You can purchase 2 sets of legs for about $27.00 (4 total) and the picture hooks are a quarter a piece. You'll also need about 9-12 grid connectors at $.30 each. I leave 2 panels connected at all times and fold them in half for easy storage, transportation and to keep it lighter. All the grid items come in chrome, black or white. There's all kinds of other accessories you can get such as shleves, brackets and baskets. This set up will cost you more than a lattice display, but it's a snap to attach the connectors and gives a very professional look.
I don't have any connections to Store Supply but before I purchased my set up, I did some research and found them to be less expensive. Things may have changed in the 2 years I purchased mine so look around but I've been very happy with all my purchesing from Store Supply.