It's a vine and is always looking to climb the hanger. It grabs the plants it can now reach, but the wind tends to correct that. So to train it I've been using fishing weights on those that grab the hanger or twist together
. It's working, but I think heavier weights would work better. Leave them on 2-3 days and when I take them off the vine hangs. I think I may have to try it on the Hoya, too.