Need to run scripts/commands with root privileges for user selfservices

The core of the topic is a very a common but I am not satisfied. I have a script looking for a pid and running the kill command on the pid if found. So I chown the script to root.root and add 4755 as suid. The script should now run with root privileges, right? Nope. I stumbled over a nice explanatory article explaining why it ain't working due to security reasons See Vidar's Blog here Is there a way to achieve the a code like kill -9 3385 in the context of root? Could an approach be to invoke a child script that has the required privileges?