Flex-o-Fold Prop

[barry]

I'm in the process of purchasing a folding prop to replace my factor 3-blade 15x9.  After reading the information on the web site I understand the different between a 2-blade vs. 3-blade can be summed as:
 
 3-blade Pros  Reduced vibration and more power - 15x10
 2-blade Pros  More speed under sail - 15x?
 
 My questions are:
 (1) what's the correct pitch for a 2-blade - 15x11 or 15x12 - Flex-o-fold says that 15x12 is the correct pitch for the M25XP.  does anyone have anyone direct experience?
 
 (2)  Is vibration created by the prop wash significantly different between the 2 and 3 blade props.
 
 thanks

[Ian MacDonald]

Barry;
 
 I just purchased a flexofold prop.  It is still in the box but will be going on my boat this week.
 
 See commnets to a query I put on this message board.  The last entrance to that query was posted May 5, 2003.