Originally Posted By: Ky Fur BusterOne 8 foot section of 2 inch pvc pipe, two 2 inch pvc tee's, and one 8 foot long piece of 2x2 lumber.
Cut pcv pipe, 4 pieces at 18 inches and glue in the straight part of tee.
Cut remaining pvc in half (should make two 1 foot pieces) and glue into top of tee.
Cut 2x2 lumber in half (should make two 4 foot pieces) and trim edges to fit into pipe.
Use backer board of your choice and have fun.
This is what I use.
You can skip the glue if you want to disassemble them for easier storage/transport.
Filling the leg extensions with something is a good idea but I use common sand bags filled 1/2 full for weights, works great even in 10 mph winds.
You could do a hasty rock fill with the bags and then empty when done... then fold them up, again, easy storageand transport.