Here is a comparison of 3 marker Tv stations. WKOW 26 , WLS 44 , WOCK 4 . The signal difference WKOW 26 from 30 feet to 50 feet is 2.5 NM(dB) . The signal difference of WLS 44 from 30 feet to 50 feet is 1.3 NM(dB) . And the signal difference of WOCK 4 from 30 feet to 50 feet is .9 NM(dB) . It has been proven over a very long period of time that a difference of signal strength or antenna gain of 1 or 2 NM(dB) is not important unless the channel Must be received no matter what the cost. Your situation I suspect is Not no matter what the cost. So a HD8200U antenna height of 30 feet up to 40 feet is Ok , and the antenna can be mounted above the roof with a roof top antenna mount. I recommend a seperate antenna mount for the HD8200U. AND Yes I am very much interested in the reception of WOCK 4. Is WOCK 4 received?? What is the signal strength?? Does the signal strength go up and down?? Any pixelation or dropouts??
