solas 4 blade

[DARRYL.8953]

HAS ANY ONE TRIED A SOLAS 4 BLADE PROP ON A 150 E/TEC .
I HAVE A 6m POLYCRAFT WITH A 150 E/TEC THAT GETS 5650 WOT AT 33kts.
THE HULL WEIGHT IS 1050kg, PLUS 200ltrs, FUEL PLUS GEAR, 2 UP.
PRESENT PROP IS A FACTORY 15X15
WOULD IT BE ANY ADVANTAGE TO FIT A 4 BLADE SOLAS PROP TO MY
BOAT AND WHAT SIZE WILL BE NEEDED TO STILL REACH THE 5600 REV range.

[boats.net]

There is no exact science for propellers. They are mostly trial and error.