Older Full Keel boats
...You can also subscribe to the publication''Soundings'',search the web and since winter is coming, I strongly suggest going to boatyards in the off season to study underbodys. You may want to think about purchasing ''Mauchs Sailboat Guides''at wwwmauchs.comm.There are three volumes and they are invaluable when looking for a boat.They show a side view and floor plan at least.They usually also show the underbody and sail plan and at least one or two paragraphs describing the boat.They will also have a list of specs.
All this is wnat I did and for the money, I think I did very well.
Doing enough homework, you will end up with the boat YOU want and not somone elses.