Given that Nacra 5.0 and 5.2 are on your list, it would be interesting to hear a comparison regarding their ability to point. Reading your comments, Dennis, I would say that you care more than I about performance and tuning. I like very much my 5.0 in all aspects (including how cheap it was), except for how it points, it makes me feel like underperforming sometimes. It might be me in part, I know it requires some skills (weight distribution for instance), but I've read that the 5.2 points better. I just don´t konw how significant is the difference.
And taking that subject to a more general perspective, maybe a cat with daggerboards is just more suited for those who care to control and fine tune as much as they can.

Another comment regarding racing: I used to race long ago, on Laser II. It was fun at first, but when I realised that my cheap boat was not really competitive, it started to suck.. the ones that I used to beat learned quickly how to tune their boats and left me out of the podium. Limited budget can be an issue for racing.

Regardiong mast rotator, there are for boomless boats. They extend towards the bow and have two lines, one to each side of the beam, to limit the mast rotation. I haven't felt the need to instal one (I'm too lazy maybe), but it seems that you would need to adjust more frecuently than in case of having a boom.