Looking for used 20' Seacraft - need advice

[Ogaff]

I understand all Seacraft have plugs in the rear to drain but my understanding is that in earlier models they were skuppers which were below the water line (more to be used for draining off once you have the boat back on a trailer). I thought that sometime in the eighties the drains were moved above the water line such that you could drain water on a plane, and did not have to worry about the plugs being out and waking to the back of the boat and having water shoot stright up and start flooding the boat. Is this the case or did I get some bad info along the way...did they chnage the design in mid 80s?