Keep in mind the cost
You can easily spend more money on interior cushions than for a new high performance mainsail for a C-22.Attractive boat interiors are important when selling your vessel. Otherwise, as you and your crew will spend 99.99% of the time on the boat outside in the sun, interiors will not have much significance.However, a new 5.5 ounce full batten loose footed mainsail from Catalina Direct will definitely have an efect on your boat's performance. And probably cost less than the cushions as well.For the port seats, try using 20 X 30 1/4 inch foam door mats with a nautical motiff that you might find at Home Depot for about $20 a piece.That's what I intend to do.