Thanks again for the input. I have not raised the boat yet. Does the trailer have to be sail-boat specific? Someone is selling a trailer for a Catalina 22. Thanks Joe of Trinkka for the wealth of information. The boat must be lifted to be loaded on the trailer, right?
It was my pleasure Herco!
The trailer can be a powerboat trailer like my Long Mfg tandem trailer. All you would need is longer adjustable extension brackets to raise the bunks up higher to support the hull plus a couple of pressure treated planks sandwiched together for the keel to rest on. The cross members under the keel should be close enough together to give full support to the keel. In other words, you don't want the keel boards bending due to a lack of adaquate support. One of my friends ran into this problem when he was setting up his tandem trailer for his O'Day 26. I think he had to buy an extra cross member to mount under the keel board for better support.
Fortunately I didn't run into this problem when I was setting up my trailer, but it's food for thought and may help in choosing the right trailer for your boat.
You don't even need to drill holes into the trailer's cross members to hold these sandwiched keel planks. I used two galvanized brackets that I picked up at my local electric light department at their distribution center. These brackets are built for mounting high voltage fuse cutouts, lightening arresters, and URD high voltage terminal connectors (Pot Heads) to telephone pole cross arms.
A lot of times they don't use the whole bracket if the poles don't have cross arms and they just bolt these devices to the pole with a 12"X 5/8" bolt.
Consequently they will throw the back plate and the two 3/8" carriage bolts, nuts w/washers away. If you ask them for a couple they'll probably give them to you. They are galvanized steel and they will last.
I countersunk the top keel board for the carriage bolt heads so that the keel wouldn't hit them. If you look at the pictures, I installed a carriage bolt through the planks on each side of the trailer's cross members and used the slotted back plates to secure the keel boards to the cross members.
I put some Never-Seize on the bolt threads to insure that I can loosen the nuts on the carriage bolts. Each back plate has one hole for the carriage bolt on one side and a long jagged slot on the other side so there is no accurate drilling required.
I raise my boat every year and put her on stands, so being able to loosen the keel boards and move then to one side out of the way, really helps in getting my boat on and off the trailer to my boat stands.
I'm not sure if a Catalina 22 trailer will work for you. The Catalina 22s had a weighted swing keel. You need to take into consideration the trailer's length and GVWR. I may be wrong but I think the Cat 22 trailer were single axle. I would try to find a longer length tandem axle trailer with the GVWR that is required for your boat fully loaded.
A guy I know bought an EZ-Loader tandem powerboat trailer and converted it over to carry his O'Day 25. He was able to raise the boat in his yard to get the trailer under it. Then he had four adjustable boat stand poppets welded to the trailer. This guy was a neophyte sailor but he was also a clever mechanic who knew how to do things of this nature with confidence.
If your boat is on the hard, it will probably need to be lifted. If it's in the water, you could try loading it on the trailer provided you have at least two sailboat stands, two jacks, some tools, and a bathroom scale.
You would need a rough measurement of the height to set your bunks at the ramp. It's better to set the bunks a little higher than too low, even if the keel is off the board by 1". You could use the jacks and boat stands to lower the boat down so that the keel is sitting on the board.
It may be worth your while to have the boatyard do this stuff, where you're going to have to travel a good distance with the boat. The trailer's tongue weight is so crucial to how this rig is going to act when you're going down the highway. Too little weight on the tongue will cause the trailer to fish tail.
I'm sure that you will come up with a good plan Herco.
Have you considered having your boat hauled by a professional boat hauler? They have trailers with hydraulic poppets designed to lift a boat out of the water, or pick it up off of boat stands on dry land. The guy could put it in your back yard on sailboats stands in less than 20 minutes. Just a thought. Good luck Herco!
Joe