Find a lone one and get it to chase you(have the bola ready)and bola it, beat it with a club(from behind)until it knocks out,be careful though,if it gets free, you are DEAD. I tamed one this way and it can kill a trike in a couple of hits,and a sarco,but it had very low stamina and speed. Great tame,get enough and nothing can stop you.
Step 2: throw the bola at the raptor (it might run at you, so do it quick)
Step 3: knock it out with tranq arrows (bring 10+ arrows)
Step 4: once the raptor is knocked out you can feed it raw meat, raw fish meat or raw prime meat (if the meat is cooked it’s even better) prime meat is the best meat you can feed it. Up this if it was useful.