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Yes the HBU22 is Ok.
You can jump up to a HBU44 , for reception of the , North North West group of Tv stations , however I can not say that WRBJ channel 34 off to the North East will be received reliably , The forward beam width of the HBU44 is much more narrow and reception will be less at a front angles to the HBU44 the further the signal is off to the side of the antenna.
The reception situation using the HBU44 , is a try it and see what happens situation , the antenna aim direction will be some where in between the 2 directions of , North West and North East.
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Here are some above the roof antenna mounts.
http://www.ronard.com/909911.html.
Use the , ronard(911) , 5 foot tripod antenna mount.
http://www.ronard.com/Tripods%200703/4712.html.
Use the , ronard 712-50-10 , tripod antenna mount.
http://www.ronard.com/34424560.html.
Use the , ronard (4560) , eave antenna mount.
http://www.ronard.com/ychim.html.
Measure around the chimney and use a , ronard (2212) , ronard (2218) , ronard (2224) .
Buy the ronard antenna mounts at ,
http://www.solidsignal.com , or ,
http://www.ronard.com.