Get a Dino with plenty of health possibly one that can kill easy and clear the area of all hostile Dino’s and then get the carnos attention then just shoot it with tranqs till it gets knocked out just make sure to stay on your mount so when the carno attacks it’ll damage your tame instead and when it starts running if your tame is fast run after it if not hop off whistle follow and run after it on foot and keep shooting at it then just slap some raw meat and narcos on it till it tames. I used this strat with my lvl 127 sarco and it worked great on carno island on the island map I could lure hostile Dino’s into the water and kill then leaving my carno there safe and able to be tamed easily.