To knock out throw a bolla get them on the ground and use tranq darts or electric prods of possible allows a faster knock out for the bollas. Other ways is ride as a passenger on a high movement speed argie and shoot as you chase it.
If ur tryin to tame one of these try lookin for them somewhere near the red wood-swamp border thts where they spawn... They're found almost everywhere around tht corner and try searching for them near the canopy, and another thing... If u suffer constant crashes and crash loops in the redwood biome then try to KO it asap then try to fly as high any can thtl unrender the rocks and other stuff then as soon any get the success notification get the hell outta there., recommended : high lvl Petra or argy
ARRRRRRRGH I just had THE WORST taming experience! Pro tip: DON'T try taming a high level one by dangling from an argy by a grappling hook... You'll end up dying TWICE and losing your argy, guns, and 80 narcotics... >:( :(