Richard,
I don't mean to be nitney picking but here's the lion:1. After re-reading your post I think I understand what you are saying. Basically "grounding with a SWING may happen in 6" of water" but "The WING would not ground for another 2' to 2'-6" of depth". So of course in your opinion getting wet to your chest is better than getting wet to your knees.2. Sorry you mistook my post that John responded to as my opinion of WING keels. I was citing an article on the Rhodes 22 manufacturer's site and asking for others to opine.3. When you say the Venture 17 is a dingy you must have misunderstood and thought I was referring to the Dagger Venture 17 canoe and not the MacGregor Venture 17. I can understand the confusion, but the Venture 17 I sailed on Lake Pontchartrain for 10 years and often spent weekends on in the Gulf of Mexico was a real sailboat. (see attached picture) Although its SWING keel had a fiberglass encased steel girder, the majority of the 300# was LEAD in the bottom end. I was never afraid of losing the SWING keel though. It had a 3/4" SS pivot bolt and a 1/2" SS lock-down bolt and a 2000# rated winch cable attached. I did "aground" with the board locked down once. The waves pushed the boat all the way up to the beach. I had someone hold the masthead down while I climbed inside and undid the lock-down bolt. The boat popped right back up and after bailing out some of the water, I sailed away without any damage to the hull or SWING keel.4. If you really have an O'Day 25 then you already have one of the best cruising trailer sailboats ever made. The O'Day 20 I've sailed for 16 years now has the same centerboard and stubby keel design as your 25. I'm not sure why you would want to trade it for a WING keel boat unless you are going to race one class in shallow water. Although the WING keel design helps shallower draft keels point higher by increasing their aspect ratio, they only save you a few inches of draft while increasing drag and hurting downwind performance (compared to a deep FIN keel). Your 25 with the CB up going downwind would have much less wetted surface. The WING keels on small cruising boats are just like the America's Cup boat wing keels (and when I put on my Pink Floyd hat I sound just like David Gilmour). I have yet to see a definitive study showing the advantages of a WING keel on small (less than 26') shallow draft (under 3')trailer able sailboats.5. As for the rest, I stand by my previous statements with the customary disclaimers. I have a few friends from the Pitts area so I know not to take your rantings personally,MArkP.S.: Keel technical article on related link.