A rower is facing backwards, excited for but also nervous about what lays ahead, while reflective and contemplative about what has transpired.
Non-rowers using ergs can choose to think they are going any direction they please. These guys
are going forward even though they are rowing backwards; they are silly though so the moral dilemma they pose does not bother me.
With any pressure the traditional "static" erg will start to walk, even with a skilled rower. It's due to bit of an unavoidable mistiming between the application of power with the legs and the activation of the clutch/pawls so that the power is applied to the flywheel. It is similar to if a rower starts driving before the blades are in the water. This is definitely not good in a boat but is tough to avoid at high rates on the erg due to the mechanics of the thing.
I have had my GPS on for erg workouts. The resulting track is uninteresting.