Great boat. I had a 2000 186. Boat would run 66 GPS all day long. Heres the ticket.

6 inch plate.
25 Tempest Prop-Worked prop by Boger Props. Tons of lift.
3.25 below pad- May vary
Trim extenders- Kept inside the bracket
20 PSI

It was a probably the most nimble Champion boat that I have owned. The ride was fantastic.

I would make sure your motor is healthy. You should have no trouble turning that 25.