A preference to "hangy" or "high up" scrotum? Wow! Quite the topic!
Just a few notes here:
The testes will "hang" if the man is relaxed and the body is warm (the sperm need to be kept at a cooler temperature than the body itself), and will contract/recede, "high up", when the body cools down. Kinda like how the penis will also shrivel after a cold swim or cool shower. So if you actually do have a preference to how the scrotum will hang, or not, you'll have to control his body temperature. This is also why the scrotum has a shriveled appearance. There is actually a lot of skin there. And some men have more of it than others. One of my friends can roll his around his belt and tuck it under the bottom. Pretty damn hilarious!
