There is a small tree across the inbound 16 at handlebar height just after the left turn to parallel Beach Lake.
Otherwise the trails are pretty good. The 12 and 14 are a little icy, but not bad.
Came across that tree on a run yesterday... didn't have the equipment to do anything with it. If you've got a bow saw you can make quick work of it. Otherwise, just duck and you should be able to get under it.