I invested in a canvas cover the year after I bought my O’Day 322, and used tarps to cover it…a real, pain in the @ss.
I purchased the cover from a place in Florida (I don’t recall the name). They were at the Chicago Boatshow that winter. Had some issues with the stanchion cut-outs, but they fixed that.
I am about on my 8th or 9th season with it…still holding up in the rough Chicago winters.
It comes in 3 pieces that zip together.
I wish I would have paid a little extra to get the cover a little longer over the sides of the toe rails, but it does a decent job of keeping ice and snow off the deck. It uses the boom as a support, so mast stays up (I don’t drop the mast anyway).
The cover was a couple thousand dollars…less than $3k IIRC. I think it has paid for itself vs shrink-wrapping every year, and as you pointed out…less plastic waste generated every year.
Greg