I installed this the other day on an outdoor mount that had another networks dish on it. This antenna has a plastic casing that is used for part of the mounting, but so far so good. I forgot to consider the trees, but since the mount was already on that section of the house and wire, I decided to keep it simple. When I programmed the tv to auto-find the channels, it turned out that the trees are not a factor at all even though the antenna is 10 ft below the tree line and there is a good 20+ trees in the line-of-sight. I am using the pre-amp since I am 30.1 miles from OKC according to [...]. I never attempted to use the product without the pre-amp since the manfacturer said it was only good for 20 miles. Either way, we are happy since we have a great signal, basic channels, and saving $50/month not paying for cable or other services.1