I mostly single-hand. I don’t have any problem with the side decks on an R25SC but I am cautious about ending up in the drink and getting separated from the boat. Docking alongside is no problem as others have indicated. That remote control for the thrusters makes life so easy. For safety at a mooring I attach to the buoy using a long pendant with a carabiner on one end and a large eye splice on the other. Photos are in my album. I attach the eye at the bow before leaving the dock and lead the pendant back to the cockpit. The pendant is not long enough to reach the prop! When I bring the boat up alongside the buoy it is simple to attach the carabiner. I can then do the walk to the bow and shorten the pendant knowing that, should I go overboard, the boat cannot move too far from the buoy.
I am amazed at the number of boats I see approaching a mooring with one crew member poised on the bow with boat hook in hand. When they do get a hook on the ring they are faced with the dangerous task of trying to get back to the cockpit. To disconnect I let out the pendant and then drive toward the buoy, bringing it alongside the cockpit. Of course, in rough weather, I could always reach the bow through the forward hatch.