I think about staying out of the center of the lane. Everything that drips or falls off can stay right there in there center. Oil, muffler parts ,recaps and dead things. A couple of weeks ago going to P.I.P . during a down pour I just missed a giant racoon dead in the road didn't' see it and shouldn't have ridding in that hard of rain . If I can see through their wind shield I don't mind following behind but always a ways back.