It measures ...
David: I measured my storm jib for you yesterday. The three sides measure 15 feet, 13 feet 3 inches, and 5 feet 8 inches. The area is 37.3 square feet. (I used a CAD program to determine the area). I reviewed this issue with my son, when we were measuring the jib. I told him that if I had to do it again, I would go bigger, but he asked if it balances the boat, and it pretty much does, but I still think that it could be bigger. I know that I thought about the sail's area a great deal before I had it fabricated. There must be a calculation that compares the size of the reefed main to a storm jib, and would give an equalivent balance of the tiller pressure. But, I do know that there are many variables involved in this calculation. I worked on this issue for a model radio controlled sailboat one time. The location of the jib relative to the mast is even a variable. I would think that a sailmaker could help you determine the best size storm jib to go with a reefed main. Otherwise, you would need a whole series of jibs to know which one would actually be the best one to go with a reefed main. Who could ever afford to do this trial and error? And, it would probably change depending on other variables, like wind speed, heading, fear, ect.The pennant (rope) on the bottom of our jib is 3 feet 10 inches long, but it is still adjustable, so the verdict isn't in on this length yet. I hope that you get additional replies. I would like to know the area of the storm jibs that other C-22 owners have.When I ordered mine storm jib, I was influenced by a friend who had a 28 foot boat, but used it offshore. That probably wasn't a good comparison, because we certainly don't use our C-22 offshore. If it gets too windy, we anchor to ride out the storm.I may be asking a similar question to yours in the near future, except at the other extreme. I blew-out our drifter last fall, and I may need to order a new one, and I will want to know the biggest drifter that I can put onto my boat. Aldo