Poaching Trails in Hoyt Arboretum

To Whom It May Concern,
Hopefully this will not be directed to any OBRA members but someone they may know. The trail poaching in Arboretum has gotten out of control. I took a walk this morning and found broken plants and tread marks next to them, every switchback had skid marks (heavy and deep).If you know ANYONE that is involved in this practice please,please tell them they are 1)ruining a great natural area within the city 2)giving cyclists a bad image and 3)possibly ruining our chance of a single track in Forest Park.
Thanks
Eric S