I currently have an old Hobie 18 that I often sail alone. I have found that it is fairly easy to sail and pretty forgiving.

However, I have not yet had to right the boat solo. My wife and I (combined 310 lbs) can barely right with the two of us. I am sure that I would not be able to right the boat solo, so I am conservative in sailing when sailing solo.

If you get a water ballast bag, you would be able to right solo.

Also, it is a rather heavy boat and difficult to move around the beach by yourself, but can be done.