To knock these fellas out try a cannon it’s the easiest way. Build a rectangle large enough to fit a rock golem but leave a side open. Lead it through the side. When he’s in aim cannon at head and shoot! (Use sulfur for taming)
It's a bit silly that kibble tames it a lot better than rocks or sulfur because even in the dossier it says that it lives off of absorbing nearby rocks and minerals. So mabey they should make it so you have to feed them a rare mineral like obsidian what if they made it so you could tame one fast and with high effectiveness by giving one a few hundred or few thousand obsidian . or what if there kibble was made out of a combination of ores and minerals .