There use to be a good number of tubing, sledding hills. My family even had one used by the public. Unfortunately, our litigation crazy society have reduced this to almost null. Our insurance company told us to shut down the hill.
There use to be a long hill at the Laconia Country Club. No longer. There was a beautiful sledding hill at Memorial Park in Laconia. That is gone.
I would be surprised if there is a hill for winter use for free.