Mary, I wouldn't tell a 120lb women or a 220lb guy (novice) to go out single handing on any boat(wave included) with out someone knowing they are out there. That's the be safe part. Conditions play a big part of course.
I just don't want her or any other girls out there to get discouraged into thinking they can't sail because of what they weigh.
I will admit that the wave is by far the safer boat, but that could also have a breakdown.
I have went out single handing on one of those days when you can't flip, and flipped. The only way to right the boat was to get help from a power boat. Things happen