You could always use a motor mount that allows you to lift the motor a foot or so. A friend of mine uses one that is made of stainless steel tubing for the rails and the mount can slide up or down the rails. The rails are mounted permanently to the transom of the boat. A small block and tackle allows her to raise the motor easily, and it uses bolts to hold the engine slider in the various positions.
The only issue with the mounting rail system she uses is that the engine can't be turned any longer... the mount doesn't allow for it... my bad—since I designed it... but it works for what she needed.
Can you post a picture or sketch of the mounting rail system? I can kind of picture it, but it would be good for me to understand it a little more clarly. My motor is in a well and being able to pull it straight up would be a huge improvement.