Hemlock is poverty browse, only used out of necessity when preferred foods are not available. It is however, valuable for thermal cover for deer and If I had a heavy stand of hemlock I would leave it for just that purpose. The property I hunt had a very large stand of mature scotch pine, that spot used to be for Christmas trees. When ever the weather is crappy, hard rain, wind, blowing snow etc. That stand of pine is full of deer, it is the perfect addition to the oak and hickory woods on the rest of the property. When you walk into the pines on a very cold day you can feel the temperature is substantially warmer in there than outside them and if raining it is much drier and little rain reaches the ground.