I had the 20 size Elder with a OS 40 4 stroke,, I scratch built a taildragger set up for it,, It was a fun little plane when the water was smooth,, touch and goes all day long
This is the only picture I have,, I made the mistake of letting a friend try and fly ut that day,, didn't work out so good,,, I recently bought a new kit,, I may set this one up e-power
Seaplane Supply sells an Ole Timer line,,
http://seaplanesupply.com/oldtimer.htm