i would have liked to know what people actually run than what they think they would like to run, i doubt if any one here had a 69 ss camaro 427 hipo with a muncie rock crusher 4 speed would drive down the freeway in second gear, my prop is designed to make max thrust at around 2250 my engine makes max tq at 4800 it makes max hp at 5200 , 5200 devided by 2. 30 equals 2260.86 if igo to a 268 only two things well happen my prop rpms are gowing down a lot or my rpms are going out of my target range, now im left with one option go to the superwide senich design prop because they " claim " the same push at 1800rpms witch puts me right back where i was , i have not seen any bonified test on this sight that makes me belive that the 268 will out perform any thing else its all smoke and mirrors an if it was true you woundnt need waterthunder hp, i know as an ee racer and a airboater im not gonna pigion hole myself into any popular opinion i find it very limiting, because every body tha reading tis thread there is more than one way to skin a cat, and if ya dont think so you aint been around long enough i fogot to say my prop is pitched to the point if you twisted it any more pitch it would not be in its design parameters