I don't think a center stringer is necessarily a mistake....wog just pointing out that it may not be necessary based on the original design of the boat. And why put the extra work/weight into it if you as the owner don't feel it necessary. Personally, my son has accused me of over-building before("just get it done, mom!") & maybe it's a woman thing (more is better), but it would make me feel better to reinforce the deck with a keel stringer. This might have something to do with the fact that I haven't been a size 7 since.....birth!. In doing so, I don't think I would be jeopardizing any performance or integrity issues that would cause me grave concern. At this point, there are only personal choices to how we restore our boats. I don't think you can miss on this one. Again....love, love, love this boat. And don't even get me started on the engine. I picked up a sweet 25hp Merc a few months back...kind of adds to the old-timer look. Easy to work on too!