Originally Posted by SkiRacer55
Not a no-brainer at all. A long GS ski is never, repeat never, appropriate for Super G. It has too much sidecut, and will overturn, be unstable, or both. In addition, because it doesn't have the base area of a Super G, it'll never be fast. For Masters Super G, a 210 is waaay at the outer end of the envelope. I know people who use a 210 for Super G, but they're very, very experienced. A 210 Super G is basically a men's WC ski.
Looks like you might agree that a full size men's FIS SG could be too much, but I have a different perspective on how far to consider scaling back.
I think a GS ski can be the right choice, taking characteristics of the course and the athlete into account.
I'm guessing that your usual SG race is closer to a full FIS spec event, and that would certainly influence the lower end of the spectrum for ski choices. For some events at that level, my recommendation would be that if the athlete isn't ready for a full SG ski, they are not ready for that event.
However, in some areas there are sanctioned SG races at the Masters level (and other levels as well) that might be described as relaxed SG, or maybe oversized GS.
I look at the range of skis from a women's FIS GS to men's FIS SG, and I see models going in nice steps from 181 cm length/23 m radius all the way up to 210 cm length/41.5 m radius. To me this provides better options other than automatically choosing a true SG ski.
For someone who usually skis a 182 cm/24 m GS ski, a 188 cm/29 m ski is a good choice for occasional SG events, or as a SG development ski. It will be noticeably straighter and sturdier than the regular GS ski, but not so much different that it can't be skied or raced well. Move up when you're ready.