Al use the 3/4 inch PVC. The 1/2 inch is too light and the wind would bend it and blow it too much. It was windy yesterday, in fact the wind was blowing so hard the target came out of the holder twice, but nothing a short walk and a few choice words could not fix. I really like it. My intentions are to cut my new range through the woods, then build an elevated bullet trap with this in front of it.
My problem is winter. When the snow banks get too high, I am limited to one distance, where ever the bench was frozen to the ground. This way if I do it right, I can shoot off my front porch. Which means, rain days are a thing of the past...