I regularly sail my boat single handed on San Francisco Bay. I have a tiller lock so I can handle lines while tacking, jibbing,or setting the spinnaker. A number of boats also regularly race in the Singlehanded Sailing Society races on the bay. Ability to reef the main is important as the wind builds and I led my main halyard to the cockpit as well. I don't have lazy jacks, but they would help. Definitely need a boom kicker. On another boat they have rigged the vang so it also can be adjusted on either side of the cabin top.
It's not hard to sail single handed compared to any other similar boat.