Mercury props

[Jerryjerry05]

​

• Just picked up a 2002 225 EFI
  Came with 2 props.
  ​The one on it is a Mirage SS 17p
  ​The spare looks like the standard one.
  ​SS 17p but shorter and wider blades.
  
  I'm guessing that the guy paid a bunch of $$ and was using the Mirage that it's probably the better of the 2??
  
  The cavitation plate has a zinc with no fin.
  ​Again guessing the fin is missing because the bigger blades on the Mirage would hit the fin??
  ​I've seen fins that are almost thin as a pencil? might that fit on there?
  
  I know the fin's supposed to help the steering?
  ​I have hydraulic​ steering.
  Will that affect anything if the fin's not there?
  
  Thanks for the help?
  
  
  
  
  

[johnnygjr]

Does your craft pull to either side if you let go of wheel, the torque from the prop. will usually pull the hull to one side. The part you a referring to is a trim tab. Some Hydraulic units that have nofeedback you will not feel the pull to one side