Transom Shops In the Boston to Cape Cod area?

[Cape Codder]

Originally Posted by erebus

Also ask him to throw in a couple of knees, one centerline and two off the stringers.
Not that much more work, and a world of difference in terms of transom stiffness.

Sounds like good advice but he's planning on doing the job from the outside. Is it possible to put knees in that way or would he have to do the job from the inside for that?