can anyone comment on what type of weight you use for a 10 x 10 tent? Please provide photos of your set up. I have two types of weights. Bags which are filled with sand and also 3 foot sections of 4" diameter PVC pipe filled with cement each weighs 20 pounds each. Do the PVC pipes get attached to the top corners and then just hang so they're a few inches off the ground? Do the sandbags just strap around the base of the poles?