Extending Tongue
Dan: If ramp is steep and deep, suspect you can launch with extended tongue. To extend, I like to be near level and in position to back up before extending. Then I block trailer real well, disconnect the wiring and hydraulic brake line, the safety chain (you could first add a longer safety), and the trailer hitch. Then move the tow auto forward and pull the extension by hand. This makes lining up the holes to hold the extension a lot easier than if still attached to auto. Then reattach trailer hitch to tow auto, unblock and back in until boat floats but stopping before rear axle is under water. If you still don't float, then you'll have to use more drastic meaures. Some trailers have neat little wheels mounted near the tongue so the trailer can be moved by gravity while attached by a cable or strap to tow vehicle. I have used the dolly on the front of my 22 tandem trailer for that purpose, but once I forgot to lower it all the way and it bent and had to be replaced. My 22 is a swing keel but some ramps are rather flat inclines. If I had a fixed keel, I'd mimic the Santana 20's trailers that use the front wheel method. Also, I'd be sure the boat is strapped well to the trailer when it is being towed, and I wouldn't want to make sudden turns. Dick