I don't know why the guy saying they're not affected by Bolas is at the top. I just hit a level 5 wild in the mountain area with a bola right in the legs and it froze in place perfectly, no issues. BOLAS WORK, BUT YOU HAVE TO HIT THE LEGS, THE THIN SKITTERY EASY TO MISS LEGS.
What I did was I used a longneck rifle with darts after killing mate stay like on a hill and shoot it to me one dart but any other type tranq works but I suggest
Longneck rifle with a few darts! Also they swim under water so WIN WIN!!