I guess a normal downwind slalom course.
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According to Damien Leroy a directional raceboard worked fine for him. You can go faster, and jibes/tags nowadays are so fast, that that is no problem.
Try to search on www.kiteforum.tv
for a slalom race video with Damien Leroy, he put a cam into his kite during the slalom race...nice to see his boardspeed.