Epoxy precautions and Construction tips

[hermco]

6. For replacing a core in a transom, he prefers stringers that run all the way to the outer skin with the core cut-out to fit over the stringers. That way the stringers are trapped by the core and more rigidly attached. He also prefers 45-degree braces or knees from stringer to transom.
7. He also likes the idea of a horizontal beam or shelf about 1x4 or 1x6 across the inside of the transom, as it provides significant stiffness to resist the bending loads that exist in a transom.

Why would you do this when the original transom design did not have or need it?