Three people have been charged after protesters, including a man who climbed a telegraph pole, forced the closureof major Sussex road for several hours.
Oganisers say they have addressed their concerns this year by using a permanent team of 28 police motorcyclists to enforce a rolling roadclosure programme.
Although the road was shut after the River Wye breached its banks, police said drivers were ignoring roadclosure signs and trying to get through, running the risk of getting stuck.