These guys are really good early - mid game tames. They are decently fast in water and their stamina replenishes instantly when in the water. Although they are pretty slow on land. All you really need is some tranq arrows and no narcotics since their torpor drains slow. If you want to be extra safe when you tame one bring a flyer like a Pteradon or any flying creature you have at your disposal. But if you don’t want to you can just keep running until you knock it out. I personally tamed a lvl 135 and it only took 7 tranq darts and I didn’t need to feed it any narcotics to tame. Unfortunately it was 4 in the morning at the time and I had to go somewhere in about 2 hours so I was rushing to get as much sleep as I could. After it was done taming I named it and immediately left but my game crashed and I still don’t know if I have the Sarco or not but I assume no. Hope you find this a bit helpful.