Laura suggested that we tether Gus down outside. I was okay with that and after a few minor scrapes I was able to secure the harness on Gus.
So we tried the back patio first. Victory! He was finally quiet and decided to settle down a bit. Before long Gus wanted some shade and made his way over to the patio table and chairs. Unfortunately, he found out rather quickly that it is far too simple to become entangled amongst the legs of the furniture.
For the record, the brick is NOT heavy enough to keep him in one place. He must have scampered through the garage, dragging the brick, until the brick became lodged. Gus then somehow finagled his way out of the harness and escaped the horrors of what would be the leaf blower.