Ebb,

Many moons ago I helped A-243's Capt move her. It might have found great favor in Rube Goldberg's eyes.... but it worked.

The boat was loaded with a travel lift, but to remove it we anchored the trailer (with a danforth) and used bottle jacks to lift the cradle and place short pieces of black iron pipe under if. We then lowered it onto the pipe and SSSSSLLLLlllooooowwwwlllllyyyyyy...... drove the trailer out from under it. The cradle was then blocked as it rolled clear.

Not recommending anyone try this at home, just saying it is possible.