I am looking for the proper prop for my (2017 hull) 621 VS Ranger. It has a Mercury 250 XL Pro-XS and won't hold in big waves, I have tried a 3 blade 21 Tempest Plus (real bad) and currently a 4 blade 21P Bravo I (better) but still won't hold the bow in rough water. I have lowered the motor to the last hole on the transom but still need a prop that will hold in rough seas. I never run top RPM and have no need for high end speeds, I guide on Lake Erie and its rougher than slick. Is anyone out there running the 621 VS with this engine and what prop is holding for you in rough water. Mercury and Ranger want my max RPM for proper prop, but this ain't no slick water boat wanting to run 6,000 RPM and 60 MPH. Any help would be awesome. I am really getting frustrated.
Larry
