Vinyl is the way to go
Vinyl is the only way. Size & color can be easily manipulated and application is easy & DIY. Here's an Ericson logo for the aft hull.
My E 38 (hull # 79) had the standard 3 blocks on the boom with one end of the sheet attached to the becket on the double block on the traveler anf the other led forward on the boom down to the cabin top and aft where it was trimmed on the winch. I hated trimming on the winch all the time so I...
After the second set of curtains for my E38 I bought Portshades to go over the fixed ports. They roll up into a cassette and install with two screws each. Completely blacked out when down but not a problem as they can be raised and lowered as easily as tearing off a papertowel. Cost about $70...