Chimney mounts are good antenna mounts.
When installing the straps , have the straps far apart , this will make the mast and antenna more stable.
Here are some antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560,html ,
http://www.ronard.com/ychim.com ,
http://www.ronard.com.
Buy the ronard antenna mounts at solidsignal by typing the word ronard in the solidsignal search box.
http://www.solidsignal.com.
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As always , trees and tree leaves do a real fine job of reducing or blocking Tv reception and so do buildings and other obstructions.
Mount the antenna at a location that has the least amount to no amount of obstructions the direction of reception.