I sail solo almost 100%. When someone else is aboard it makes sailing more difficult because I'm so accustomed to doing everything myself I wind up "making work" so the other(s) have something to do. It is always good, however, to have rope handlers in docking or someone to steer while I fiddle with something up at the bow. Sometimes.... no... OFTEN, you get stuck in the cockpit for many hours. Having a checklist of things to have on deck is important because when you cannot get away from the wheel, little things like having a cup of coffee or getting rid of the recycled coffee
or not being able to dig around for your rain gear or that chart you need can become a problem.