We'll be able to see how race inspired and efficient the new Ultra hull is compared to the STX style hulls. The Ultra LX is basically a 15-F with a new, larger hull. Running a LX against a 15-F should provide an interesting comparison.

The older style GTX with the 951 proved to be a much quicker and better handling ski than was the new hulled (2002) GTX/951. If I recall, there was a 4mph difference in the two skis.

This year we will also be able to compare the RXP and new GTI hulls when both are equipped with the 155 hp engine. This should settle the question as to which hull is more efficient.