[eggsuckindog]

Not sure what that design actually is, not much cup or blade area but cup could be added but prolly not worth it - I had a little tip ding, hub and brought to spec and it was 150 just as an FYI


I mentioned before the design of the Stilletto's are great for us, a 17" would be the proper size. Engine height based on my experience would be the cav plate 2 1/2" above the hull bottom. I get no cavatation there at all and just stellar trim responce, it holds the bow up and holds it down - whatever you want, I can't imagine anything else working better. The Mirage + was a big favorite on here for awhile, it is a similar design to the Stilletto but has more Dia @ 15" vs 14 1/4 - never found one to try so can't comment on them.
Bigger blade area probably would work well on a 23, not sure on a 20, although I found one at my marina used and after talking with the guys that had tried it they suggested I stick with mine - raised the motor a hole and it lit it up, so glad I kept mine.

My original prop was a rounded ear Merc, closest thing I could find was like a Vengence - it was horrible compared to this, even my inexperienced crew noticed in 10 min

I saw Stilletto's new on google search for 250 to 285 which I thought was pretty reasonable - I got mine used for 150 from a friend