http://www.flickr.com/photos/beth-ne...go/3305685469/
I am not sure how to put that pic on here- but there is the link. Could you do something like that on top of it? Like, just add it right over the existing quilt. I would make the flower large- like say, 4 feet?
I am not sure I like the idea of just a sailboat slapped on there. I think it would look more repaired and less like it was meant to be there.
If you really want a sailboat, I think Charisma's idea is good. (She is brilliant, btw. Always love her stuff.)