If you use the grey electrical conduit pvc it will by more UV resistant and less likely to shatter. However it can get a little soft in extreme heat.
Made one of these today out of 1" pvc electrical conduit. Had to do the notch thing differrent and I used a poly rope ring instead of steel but it came out great. I am a part sasquatch and weigh in at around 350 and the pvc and rope ring held up fine.