I installed a yanmar 3ym30 in Tally Ho! two years ago. The new engine is smaller and lighter than the previous 4 cylinder kubota. Now the boat sits perfectly on her lines and sails better as well. I have plenty of power but not as much torque at lower rpm's. For quick bursts to bring the boat to a stop or make a fast turn, I just need to throttle up more quickly. It's very smooth and quiet. My prop is an 18" three blade Maxprop. Keep us posted on your progress!

Scott s/v Tally Ho!