Josh Assing wrote:
4 blade props are overkill unless you have a hull design that can
benefit from the extra surface area to correct a bow-heavy porpoising
situation. The most efficient props are 1-bladed, but they are tough to
balance. Three blades seems to be a good compromise for mid power & speeds.

I thought 4 blade helped lift the stern.


It might, but any prop, 2, 3 or 4 blade, with more blade surface area,
will keep a porpoising condition at bay with higher trim or jack plate
settings.

Rob