I had thought that polycarbonate was "more likely to scratch" compared to acrylic ( plexiglass ), and that polycarbonate yellowed over time due to UV exposure.
http://www.hydrosight.com/acrylic-vs-polycarbonate-a-quantitative-and-qualitative-comparison/ Michael Brown Windburn C&C 30-1 Date: Sat, 18 Nov 2017 14:36:12 -0500 From: Brian Donovan <bria...@rochester.rr.com> Hi Bruce I replaced my fixed ports this past spring and I used 3/8" polycarbonate. It is stronger and more scratch resistant than plexiglass. I purchased it from Curbell plastics Rochester NY Cheers Brian Brian Donovan 112 Frisbee Hill Rd Hilton NY 14468 (585) 313-1940
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