Re: Breasting my fin keel? Help please.
I agree with your concern about the structural contribution of 2x4s. There was a day that a clear 1/4 sawn 2x4 had some "juice". Those days are long gone. I have a set of pump jack supports I built of carefully selected 2x4s back in the 80s when live edges were not standard on dimensional lumber. I could use them or 4x4s as you suggest. A couple of lengths of 2" sch 40 aluminum pipe would be my druthers with a purchases for the toe rail.
Thank you for your considerate observation. Hoping you dodged the Sandy bullet.