Guardian Angel Anchor System* The Guardian Angel Anchor System is easy to assemble and doesn't create the mess that some water based counterweight systems do. The only thing this anchor needs to be installed is Man Power. * The Angel Anchor is a non penetrating free standing unit that can be used without puncturing the roof and creating leaks. * This anchor provides a single tie off point for a single worker with a combined weight (tools, clothing, etc.) of 310 lbs. * The base