Yes, the 31 is pretty easy to singlehand (even with non-sailing crew in your way.)
I have to agree with teejay on the drawbacks of the 31. Cockpit storage is very small and the quarter berth is becoming a little cluttered with big things such as spinnaker, cockpit cushions and the like.
The openness of the v-berth is one of the things that drew me to the 31. I spend 100+ nights a year on my boat and it still feels like a bigger boat than a 31.
I am still tied to land and only using the boat on weekends for daysails and maybe a week or so a year. When I get a chance to break away long term, storage is one of the things I will have to address (as with any small boat). I think it will actually force me simplify and really judge each items value on board.
Teejay has covered some miles in his 31 so he could tell us a lot more than I can.
PSC 31 Journey