Is it possible to mount to eave on the outside of the roof and have the antenna on the inside of the attic at the same time?? Here is a picture of the eave of roof.
http://www.ronard.com/34424560.html . Here is a picture of a J mount ,
http://www.htmart.com/product.php?productid=772 . Mount the antenna up high , means mount the antenna Up High. Having a good clear view in all directions , means try to get the antenna at a location that has a good clear view in all directions.