Okay, I haven't even gotten my first boat yet (it's in the mail) and I want to get a prop ready to swap. I have a Sonicwake that is supposed to do 50+ with a prop change like 70mph. I will be running 6S. The current prop says" Propeller Size: 1.6x1.73" What would be the next upgrade from that? 1.97? 2.17? 2.24? ect..Thanks