Build a small stone room of stone with a reinforced door so it can't get in and make some openings in it so you can tranq it out from inside and stay untouched. Once knocked out use fish meat or kibble, if not just use meat but don't cook anything because it takes longer, uses more, and reduces effectiveness.
Hey, ok so the center, coordinates 08.1 / 63.4 spinos will spawn there, if is not high enough just kill it, leave the area and come back after 3 mins. Normally works, I found a 150 and I'm taming it rn
stand on a high cliff and shoot it or keep shootong it and running away on a raptor until it's knocked out. it gets distracted very easly by fish, sharks and manta's (even while chasing you) so you may want to shoot it while it's distracted.