Lisa, again the issue with that Tiger video is that they were sailing in a shallow, narrow channel. A puff came and they had nowhere to go. That's just something that comes with high-speed sailing in a trench in France.

Regarding single-handing the H16... I do it all the time also, but I weigh about 170lbs. I need a righting bag or a buddy to get it back up, and with a righting bag it still takes a bit of work. I don't know how well you'd do on an H16 solo just because of that. On the other hand, you could try and find an H14 Turbo, it's the 14 with a jib. Same idea but the boat weighs quite a bit less so you'll have an easier time righting it, (I can do it alone no problem) although someone that's 120lbs. might need a bag, I dunno.
Once you get used to the H14T then you could upgrade to an H17, which is another boat designed for single-handing, but it's bigger, faster, and less likely to pitchpole.