What year is my 20? Can anyone tell me.

[Ikan Besar]

exactly what oldbluesplayer said. ANY numbers on your transom, no matter how worn, places your boat at '72 or later. A graphite rubbing will often bring out numbers you can't discern by eye.

As far as stringers, up to '71 had four stirngers (small, about 4" wide) whereas the '72 and later had two large (12" or so) stringers. At least that is what I have noticed in a few that have had there floors redone locally.