My first RV was nail-biting. Docking is easy. Then I managed my second RV really easily. The craft was a lab with a home-made cube docking adaptor thing. EDIT: How I did it Launched a bit ahead of the station, got into low orbit, used a manoeuvre node until I got quite close, then at closest approach I matched orbits, then I reduced relative speed, then I pointed at target and went to it. Kept getting confused about whether to use retrograde or retrograde from target.