Thanks for the comments.
I'm assuming most mooring lines will be 3/4 inch diameter - am I right about that?
Delite: You're right, an 8" cleat would seem somewhat out of scale for the boat. I just want more cleat to work with.
On the other hand, here is what a small mooring bitt looks like on another Compac 19.
Don't know the diameter of the bitt post but the pulpit tubing is 7/8". I think it looks good, is plently versatile and I can get a large backing plate on the underside. Paulk - do you still have your same reservations about its usefulness?
Minewaska - I cannot push through a line on the existing cleat. On the mooring bitt I'd be able to fold over the line as shown in the photo.