Use a telescopic boat pole
I normally pick up my mooring with a telescopic boat pole that can open to about 12 feet. Where I moor on a river, the current changes from one direction to the other, so I've opted to use about four Styrofoam fish trap floats threaded on to my pendant line with a stopper knot at the end of the pendant line. This allows the pendant line to float on the surface at all times rather than sink and wrap around the mooring chain. The other thing it does, is make it easy for my boat hook to grab on to my pendant line without slipping off. The prevailing winds on the river are normally South-West, so I'll most likely be running in a Northerly direction toward my mooring with the wind on the Port side of my mainsail. Usually I can get a short distance behind my mooring and then head up and fetch to it. I then walk slowly to the bow with the boat pole and grab my pendant line. It takes a little practice and my boat handles great with just the mainsail. If you feel uncomfortable about doing this maneuver in a crowded mooring field, start your engine and have it ready, but remember, the drag of the outboard skeg is going to have a different effect on the "way-on" of the boat. This works for me in all but the lightest winds and depending on the depth of the water. I never attempt this at low tide where my tip-up rudder can bottom out near my mooring causing the maneuver to fail. When I motor up to my mooring, I always shoot the mooring into the wind or the prevailing current, which ever is the strongest, and put the outboard in neutral and walk up to the bow with my stick. A great idea is to attach a Stainless Steel snap hook to your pendant line and run a line from your bow cleat to the stern cleat outside your lifeline stanchions on your Starboard side. On extremely windy days when leaving the cockpit to retreave your pendant line at the bow can be hazardous, you could motor up along side of your mooring and grab your pendant line with the boat pole and snap the hook onto this line and let the boat drift back easy. Then you can go forward at your leisure time and permanently tie on your pendant line to the bow cleat. A piece of Styrofoam threaded on to the line near the bow will prevent the hook from marring the fiberglass. I've never tried this last one, but I'm sure that it would work for someone with a large boat, provided there is enough room behind your mooring. If not, then attach the snap hook on the pendant line at a distance that you'd normally moor your boat. Whenever I single hand, which is 99.9% of the time, I always have an alternative plan just in case the first plan doesn't work. Before I pull up to a dock under sail or power, I have a bow line connected on that side that I plan to get off the boat at. I tie this line to the stern rail with a "Highwayman's Knot." I also have a stern line tied to the stern cleat, and ready so that I can pick up both lines as I get off my boat and step on to the dock. Some boats are hard to step off of, like the O'Day 25s, but with a little care, one can perform this task safely. Do whatever is comfortable for you. Personally, I love moorings and I think that they're easier to use than slips if you single hand.