Mind you, that was 1.8 on a lake on a reasonably calm day. Troll upstream or upwind and that number starts looking considerably smaller.
Another trick I have used in the past is to drop my bowmount and turn the head perpendicular to the long axis of the boat. The water resistance of the head will knock a few tenths off your speed as well.
So, someone could strap a bow-mount troller on that 1790T, and they’d be ready to vertical jig, pull 3-ways, drag, or pitch for those piggies that live within a few clicks of Everts.