Loco, if I could have found a 2 stroke 18 HP Tohatsu or Nisson motor, I would not have bought the 15 Yamaha. It was one of the last 2 strokes available in the area at the time it was purchased and they were taken off the market that year.
We slow troll a lot for fish, so the 15 works well. I generally lean out the carb for lower trolling speed, but the needle is protected from adjustment for emissions on the newer 2 strokes
We are on the same page about props, but I admit I do like to play with performance on my fishing boats. Guess that is from hanging around engineering folks for so long
The motors are used on several different boats, but I have culled the herd over the past few years. Heart attack, so the canoe was given away; too old for duck hunting, so the Geenoe type was sold; gas prices got so high that the big boat was given to a friend. Along the way a 9.8 Nisson joined the family and is one nice motor for the inflatables. Can't help it, but I love the water and am blessed by a wife who shares my love of the outdoors. People say she spoils me you know.