I find it useful if you pump nothing but weight and then harvest metal with it, just put yourself in the pouch and have a friend walk up to metal nodes, then you can harvest metal without even leaving the pouch!
I pump pure speed on mine. Always. Nothing better than a Roo with 200+ speed.
These guys are great at gathering thatch. Maybe not as good as a Bronto or a deer, but they are so fun. I use any excuse to take one of mine out to get some thatch.
They make the same bite noise as a parasaur, which is disturbing, but hopping around from tree to tree is undeniably fun.
If you have an argentavis, grab the procoptodon on the claw of the bird and let a friend fire him some tranq arrow / dart. If you don't have an argentavis or a quetzal, then, trap him with bolas and fire him. Bring some wood / stone fence foundation and some wall to build around him to be sure that he's not attacked by any wild creature and be sure to have a lot narco / rare mushrooms. When tamed, a procoptodon is fast and he's a great Dino to tame other since you can jump in his front pocket and fire weapons. Also great in scorched earth when you're trapped in a sandstorm.