Might depend on how the fence is set up, if it is a wire or 2 on the existing fence, shouldn't make much difference. If it is built like a secondary fence, a few feet off the primary, then that could be a problem.
IMO, you are likely not seeing as much deer activity as everyone else, due to extra browse for this time of year. Should be getting better for everyone though I would think, as those resources start dwindling.
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