A lost day

Today seems to be good : track is dry, there are less than 30 people on the circuit, so, everything is OK to have a good riding day.But, 10 minutes before circuit opens, there is a 5 minutes shower which will let the track wet for the whole afternoon. Half of the guys (especially the ones with slick tires) go directly back home. I run about one hour and a half, but I don't especially enjoy it...So I go back home a bit disappointed by my day.