That's a lot in 8 feet. I would suggest as been said and maybe mark it every foot for 10 degrees. If was in maybe a 100 feet might not even be noticed.i'm not sure about the actual degrees. it's roughly a 90, but takes about 8 feet or so to do it.
its on a rooftop and will be carrying dc from solar arrays to the inverters.
Ughh....pvc on a roof.customer doesn't want it