I’d like to try using one of the various cling vinyl sun shades on a polycarbonate canopy. I gather there is quite a bit plasticizer in the “vinyl” which might actually be pvc. I’m at a loss trying to decipher all the possible chemicals used as plasticizers and their effect on polycarbonate. Any chemists or folks with practical knowledge of the issue? I am particularly interested in the “cling vinyl” type of sun shades because it would also serve to protect from my headset marring the canopy. My primary motive is to protect the canopy from getting scuffed from my headset so any ideas on that is also welcomed. I’m considering putting something like moleskin on my headset if the cling vinyl is no good. Thoughts?