need some help deciding

[kidnmolly]

I have a 06 17 ft seaswirl with a 3L and a volvo sx drive , I have recently put a wake board tower and speakers on it , I use this boat for water sports with the family. the problem I have is that I have trouble coming on plane when I am pulling some heavier weight out of the water , presently I have a 15 inch X 17 pitch prop on right now and want to get a new prop to see if it will help me and not sure what pitch to go to or 3 or 4 blade, Any help would be great. thanks

 

[steelespike]

Re: need some help deciding

What is the wot rpm and speed by gps? Choices would be a prop change or perhaps trim tabs .Something like Smart Tabs.

 

[kidnmolly]

Re: need some help deciding

Before i put the tower and speakers on used to get 42 mph at 4900 rpm now with the tower and speakers only get 38 mph same rpm ,

thanks

 

[steelespike]

Re: need some help deciding

According to my info You can't do 42 with your ratio and rpm So one or more spec is wrong.
It does appear your pretty far down the list of props and I believe your rated max rpm is 4600.
A set of tabs may be a good solution.Perhaps something like smart tabs.
read the info carefully before a purchase. Conservative application Of just enough pressure to get the boast up.
Also careful weight placement and elimination may help.