I remember last year, when my RS3s were almost gone (50-60% in my opinion is almost gone), it was raining really hard at button willow.
It helped me get really really smoother there that when it dried up the next time I went, I gained a LOT of time.
It was really fun. only thing was that you had to really watch out for others... .I remember we had over 50 offs that day. Fortunately I didn't have 1
Tracking in the rain can be fun.