I got stated on the 25' by getting it off the trailer and on blocks in the yard. I got the transom skin cut off of the core in one full piece so that I can use it for a pattern once I get ready to cut out the new coring that will be going back in it. The wood was so rotted the inner skin came right off of the wood core and was easily removed once cut from around the rear of the hull. The ply wood is almost gone. There is a little left that is intact but not much. This will make it real easy to replace. I will finish removing all the old core then clean up the remaining wood from the outer skin.
Pictures of the transom before it was cut:
Picture looking down between the two pieces of ply wood:
The transom with the inner skin removed:
The inner skin out of the boat: