No, many loops receive best along the plane of the loop element. So if the loop element points n/s, that's the direction it will favor. Loops are usually mounted no more than a couple of meters off the ground, and you can use a light duty TV rotator as the wind load is very small.
Interestingly some folks have been experimenting with mounting the loop horizontally instead of the normal vertical, and mount it higher, it becomes nearly omnidirectional.
However directivity becomes much less of an issue as you get higher in frequency - around 3 Mhz or so, skywave propagation becomes more dominant. At 160, you are beginning to get close to this range. On 80 and 40, you might not notice much, if any.
We have another forum for receiving antennas but to get you started, here's our wiki on the subject....
wiki.radioreference.com
Mike