I've owned an 11' Oxbow Cruiser couple of years, my first sup and use it on the Great Lakes. It has pretty good flat water and downwind characteristics, but I have trouble catching waves on it, probably due to my lack of ability and I feel it could use a bit more rocker. I would also add that it is a better board for folks under 190lb.ish.
Last year I picked up a fatty from South County SUP ( see other posts) a lot more stable and lots of fun. Just my 2 cents. Hope it is some help, have fun.