History of Seacraft builders

[Stief47]

I am a new member to classicseacraft and have a question about the different builders of seacrafts. I know that the Potter/Mosely boats began in the 60s. I am interested in when the next builder, I believe Tracker, started and stopped production. Also, other builders came after Tracker and I would be interested in the years that they were in operation to the present time.
I have been considering looking for a used 23cc but have not been able to determine the builder of some years. I remember the tracker seacrafts and from what I saw I was not impressed.
Any info on this would be appreciated.