A bit off topic, but I purchased a canvas cover for my O’Day 322 the first year I had her (about 10 or 12 years now). No frame needed for this cover. Uses the boom for support and jib halyard to support the front section.
Cover is still holding up fine, wear and tear excepted. I think I paid around $2,400 for it…so at 10 years, my cost is down to $240 a year. Well less than the $600-$800 per year to shrink wrap (and so much better for the environment).
I have seen people do their own shrink wrapping. My marina allows it. But by the time you buy the propane gun, shrink wrap, vents, zippered door, and then extra stuff cause you will probably screw something up, might be cheaper to pay someone.
But I still like the canvas cover. Keeps the rain, snow and sleet off the boat, but has plenty of ventilation.
Greg