Thanks for the reply.
Basically I was confused by reading posts *here about scuppers and bilge (and camper tops, flotation, HIN, transom, etc).
Looking at this photo of Ken's '71 CC, and it confirms scuppers were used then, and all vents are identical except his '71 has an additional vent on the starboard side, most likely used for a bilge.
http://www.wellcraftv20.com/gallery/...2&id=IMG21
Ken's '71 has some foam floatation, except none in the rear area of bilge. Perhaps in '72 they added more foam, and did away with bilge? Comparing my '72 with Ken's '71, and I would guess about 1/2 of his rear bilge area would need filled with foam to compare to how mine looks. Also the side runs on kens '71 that have no foam appear to be factory filled with foam on my '72. No holes in rear sides of bilge (no notches at rear of stringers) to drain sides into rear area of bilge. My floor is not removed, and just estimating by looking with a flashlight.
http://www.wellcraftv20.com/gallery/...2&id=IMG15
If '72 did use more foam, looks like in '73 they went the cheaper route again, since the photo's of transom overhaul do not show any foam like my '72 has.
http://www.carolinayachtenterprises....0_rebuild.html
The photo's have cleared up a lot of the confusion.
#1 thing learned is that a V20 discussion does not mean all V20's. Probably because most do not have a old CC, so most discussions relate to those non CC V20 owners.
Thanks again for the reply. It got me checking into the details more, which then took me to Ken's photo's.