Ok, went out yesterday with 2 people, full gear using the 21p prop. I wasn't to happy with the performance right off the bat but it could just be me needing to readjust how I drive to the new prop. At certain times while driving it felt like it wasn't grabbing the water like it should. I normally drive where its throwing up just a tiny little rooster tail, like just barely throwing up water when I'm at WOT. As the day went on I kept my trim a little lower and it felt good. With 2 of us in the boat I was at 5500rpm's @ 53-54mph. Which is only 3 mph less than when I had the 23p prop. I'm gonna go out next Tuesday by myself so I have a better reference on the prop because normally it's just me by myself. This time I had 2 adults with all our gear. If by myself I'm still noticing it not grabbing like I should I'm gonna get that 23p prop back. They're the same brand, same model of props just different pitches.