[willy]

In regards to the self bailing I have not seen any really old ones but I believe they were all self bailing. Some were a better set up than others.
My 86 was, the two earlier 80's I was on were also.
Some were set up as a self bailer in a poor way in my opinion, they were set up with scuppers that drained into the bildge and relied obviously on the bildge pump to get rid of water. I beleive most of the I/O boats were like this.
The OMC sea drive and outboard boats I have seen going back into the early 80's at least were true self bailers, meaning in my mind the cockpit drained thru scuppers and out thru thru hulls overboard using the natural flow of water and no other mechanical aids.
The later years, the earliest I have seen around 1987 did not even have scuppers or thru hulls on it, the floor was high enoughand it drained straight out thru the rear of the boat, usually where the cover board for the motor well is thru slots cut in the bottom of that plate and into the motor well, which was then drained thru the flap type drains that are standard in most motor wells.
This arrangement is what I have on my 92, water, pretty much no matter how much of it flows right out of my boat very quickly, and if you are moving forward, even a little a wave scutlled cockpit would flow out very fast. Sitting in a dock or drifting none comes in at all or if pretty hairy drifting like I do thru the Sandy Hook Rips at times you might get a little come in from the outboard but it flows out right away.