looking for experience with the trolling plates.<br /><br />i have a 35 hp evinrude. i found atrolling plate by tempres on e bay, no instructions as to what hp it applied to. the plate is approx, 10 by 10.5 inches.<br />what is the optimum spacing between the prop and the trolling plate?<br /> i tried it out the boat would not move and the water hit the plate and disffued sideways.<br /><br />thanks for any advise