Andy, dont worry about your water pressure, you wont lose water pressure with the style lower unit thats on that boat. Put your plate a 1/4 below flush and trim it untill your roostertail is even with the cowling. Work up from there a 1/4 at a time, but keep in mind the Fury likes to be run low with the Verado style L/U. My best with a 25 fury was 74.4 with a light load, and in the limiter.