Minimum Planing Speed

[76Red18]

It's not the forward momentum that lifts the hull to the planing position? My thinking is that a lower pitch prop would get there faster but at the same mph as a higher pitch. I have a 17 and 19 but they are different props. the 17 is a bow lifter and no good on the boat. the 19 picks the stern up and will plane at 15 - 17 mph. If I wanted a lower planing speed a 17 with same characteristics as the 19 might do it then?