I used a spino, bit it once then ran on safe land, it launched itself to attack the spino while I dismounted, bolaed and tranq the thing, after that just called the spino to follow me out of it. Another way is to use another kapro to take it to safer place and have your tribemate knock it out while it still in the kapro jaws, if you able to catch it first anyway
Here’s how I did it.
Step 1. Find low lvl Kapro
Step 2. Run at Kapro
Step 3. Punch Kapro til it faints
Step 4. Shove boa meat down it’s throat
This method worked twice for me, with a lvl 1 and a lvl 3. If you’re going for a high lvl, a crap load a health will see that this method still works
If your on the island go to the east side of the map. Go to the edge of the swamp and make a trap, even a two by two thatch one will work. Put door frames on the edges of the foundations, then finally a ramp for it to walk up on. You can also use this as a safety area to knock it out from. Vote ^ so others can see!!