Your boat, do what you want.
Look again, the stamp says BOHEMIA. Situated in what is now the Czech Republic, it was the former home of the Hapsburgs, now porn capital of Europe and home to some really beautiful women.
At any rate, get a real good look at the grid Mr. Moesly designed and built. Freakin' stout! Get more pics. That was "how to build a boat better than anyone else."
And get a good look at his perfect shear-line. Freakin' beautiful IMHO!
Nobody asked but, IMO, the shear-line on the bottom picture doesn't work for a SeaCraft 20. In fact, I find it's F-ugly.
I hope you'll re-think that.
If not -- I hope you get really wet!
O.K. - I'm done... Good luck with your project.