I do not think that is such a big issue around these parts - at least not that I am aware of....sure it happens, but I would say not a lot.
I see you are in Newmarket, so the closest drop point is Haliburton or Dorset area, Raven Lake parking lot just South of Dorset has never been an issue, other than people that do not park with some common sense of course .
Start mid-week and you will not have an issue finding a spot here for truck & trailer, trail is right there......just park sensibly please for others that want to park there as well!