Heres what my 3 man tribe did pm the island...coords, 77.1, 65..built a gated base on the river (behemoth gates), theres an alpha raptor spawn nearby, often two or three of them around base all the time, great xp and loot...but you CANNOT TAME ALPHAS. but you can use doorframes and another behemoth gate to build a taming pen off your perimeter wall, works great, lead something in (like a raptor), it cant fit thru doorframes, tranq and tame, open the inside gate when complete and walk it into base

More Raptor Taming & KO Tips