In the TZTL12F, the "route detail" screen shows a list of waypoints of the current route, with TTG and other data at the current SOG. It would be useful to be able to override the current speed if I have reason to know that the current SOG will not be maintained (for example, if I'm on the ICW waiting for a bridge to open, and I want to work out what speed I need to make to catch the next opening on the next bridge).
It would also be useful to choose either TTG or ETA on that screen.
It would also be useful to choose either TTG or ETA on that screen.