I will take some pictures this weekend and post them with the progress of this project so that It may helps others here in the forums.
The only soft/spongy areas of the bulkhead are along where it is tabbed to the hull. If I were to cut that part of the bulkhead off use it as a template to replace with 3/4 in marine plywood then do a sistering board on the forward side of the bulkhead so its in the head and not very visible.
When sistering the two together should I use epoxy and thru bolt it all together for added stiffness?
This is a repair I want to do the right way the first time for in the future I plan to keep this boat a long time and do some coastal sailing with her.