I have a 1989 Champion 184DC with an 89 Evinrude XP175. I bought the boat a couple of months ago and it came with a 27P Shooter prop. Don't like the performance. I can't accurately give you WOT RPM yet because I need to replace the Rectifier/Regulator. I know I should be running 55-5800 rpm. Don't believe I'm getting that at all. When I get out of the hole, if I hammer it, it will blow out. I'm mounted direct to the transom as low as it goes. I'm a prop dummy and could use some advice....thanks, in advance.