I have a Sea Ray Laguna 21 in really great shape clean boat. My question is how do you know if a boat is worth repowering. The value of the Laguna's aren't very high I planned on keeping her for a long time. The Black Max 200 that is on there now runs well but is a gas hog and loud I usually take the family on long rides. I was going to repower with a Suzuki df200. What are your thoughts.