Greetings from Charlevoix MI -- I also am the owner of a Seaway 25 -- I picked it up near Petoskey MI in late 2014. I think I have hull #2 from 2008 w/a DF175 out back. With the original 3 blade Suzuki prop, I could hit about 28-29 kts, but it would not stay on plane below about 20.. I...