Can anyone help me understand?

Fixx
 

[QUOTE=mrdwp;3683686]Can anyone help me understand?[/QUOTE

this trend sums it up!

http://www.offshoreonly.com/forums/p...-question.html

Thx that's what I was looking for

Different hulls and setups require different rakes, diameter, pitch. It can affect center of gravity of the boat. Rake can be changed to give the boat better all around performance. You wouldn't change the rake of the props on a boat that performed well with a certain rake.