I've found singlehanding is much easier if I bring someone else along.
But seriously, the less walking you have to do underway, the better. Lead everything to the cockpit, get a wheel or tiller lock, self-stowing mainsail bag, roller-furling (and reefing) jib. Mark your docklines and sheets so you only have to adjust them once to get the right tension for whatever situation. Portable VHF to keep you in the cockpit. Cold beer to give to the nearby dock rats whom you've asked to catch a dock line or help you get in, or fold some sail, etc.
The fewer times you have to leave the tiller, the better.
Oh, yeah, a harness and jackline or clip-in places. No one to get you if you fall overboard, so don't. Make the portable VHF water-resistant and clip it on your belt in case you didn't do the harness thing.
Last edited by nolatom; 06-07-2011 at 10:15 AM.