I've never rolled mine, so I can't give personal testimony about how hard it is to right them. But on the Hobie forum board, there are a few (very few) stories about guys rolling them and they say it's not too hard to roll them back - especially if you have a cord attached to the opposite side. Just pull and it flips. Then you re-board by coming up over the stern, not the gunwale.
I've been in some pretty good waves 2+ feet once or twice when the wind kicked up, and felt perfectly safe. But it isn't something I do voluntarily. Mostly because sitting up high like that makes fighting the wind a real chore. I make a pretty good sail, apparently!
