Andy:
Actually, the IGC effort to give 2 x speed points is a completely needless complication. Speed points are twice as easy to lose -- and twice as easy to get. So it makes absolutely no difference to strategy . All it does is to make 300 distance points the same thing as US 600 distance points -- which is why the US raised speed points to about 600. That's why I dropped the 2 x speed and raised distance points in the suggestion.
John Cochrane