Like many folks here I like the ETA and VMG functions of my GPS and that's mainly what I use it for. In terms of actually deciding which way to steer, I do it all by eye. My GPS doesn't have maps on it and I only carry paper charts. I sometimes transfer my position from the GPS, but generally I'm either far enough from the nearest hazard that I don't care precisely where I am, or I'm close enough to it that my main navigational tool is the depthsounder.
1972 Catalina 27