barnacles

From my boats on the upper Chesapeake (Annapolis area), one our Pearson 35 and the other a small Sea Ray powerboat, it seemed to me that the barnacles this season were worse than last year - especially the prop and through-hulls. My raw water intake hole was pretty grown over on the P35. Is...

Another newbie question possibly. After a complete tune-up and unfortunately close to two months at the dock with 70+ degree waters, i found we could barely move, presumablt due to barnacle build up on the prop and shaft. I donned a mask and gloves and cleared the prop and some of the shaft...