We did a Greensfelder ride yesterday. 10, 10 ticks plucked from my legs. It is the equines. Those nice people and their 2000 pound animals who post hole the crap out of the trails that the mountain bikers build. That is the reason for the ticks. I must say, that usually around now, the trails start coming back a bit from the wet season and their damaging trail rides. As was the case today, for the most part. Except for the armoring that have been kicked away on the water shed areas. Those big hooves come clunking through the low points and basically kill the turns, creating more need for improvement, more man hours.
Lets face it. There really is no way to co-habitat with the horses. They are going to trash out the trails, time and time again. The only way to make sure that we can have access is to turn the other cheek, grin and bare it, bite our tongue, be damn glad they aren't taking away our rights to use. Even if it was we who build and maintain the trails. We need to show up in masses, a lot, to discourage the horses from coming to the parks where the MTB's train and maintain.
I would guess that your average equine doesn't have a clue as to how bad the damage gets in certain situations. They simply run over the trails, create switchbacks and walk arounds wherever needed. They leave their poo everywhere, which gets in my fingernails. I like it especially when the trail has become too damaged for them to even take the horses on the trails. Sooner or later they create so much damage that they quit coming to that particular trail and move to over-use the others. Until somebody fixes them.