I have a d130j mounted at 7 feet between two houses and under a tree. Needless to say, I barely pick up my city's digital signal. It is in and out on my Pro 106. I cannot mount a tower nor a tripod on the roof. I do, however, have my fence posts as 6x6 posts. Based on your experience, how can I attach a 30 foot mast to that 6x6? Do I have to use guy lines (My plot is fairly small)?