Try the Trident 13 or even the 15. I have the T-13 and have no problems with the open water, paddles great, fairly dry and handles the surf well. I would stay away from the T-11 just because of where and how you would be using it. If you go with the 15, I recommend you get a rudder also.
P.S. I am also 5'9 and weight 175.
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