I just got a spare prop for my Evinrude G2 (250hp) on the back of my 2017 Ranger Z521c. The boat originally came with a 3-blade Raker HO (14.5 by 26 I think). Now I put on a 4-blade Rx4 (15 by 25p).
There are adjustable vents in both props. My hole shot is great and I honestly don't care about hole shot. I am interested in top end speed. Can someone tell me how the vents affect this and if I should open or close them, etc?
I have also read other folks talk about "blow out". Can someone explain this terminology to me?