I did a search and I did not find any real conclusive posts. How do the tracks operate in the winter months? I know many of them are open, but I have heard folks say that they are subject to weather. Im most curious about these tracks: Thunder Valley Erie(IMI) Watkins Berthoud (VDR) I am still recovering from a dang broken collar bone, and I have not got nearly enough riding in this season... Thanks in advance!