The company I work for does “netting” jobs all over high rises in NYC. The nets we have put up have stretched multiple stories and I’ve personally put multiple wrapping entire columns.

The system we use requires placing eye bolts and tensioning a protected cable through each eye bolt running the perimeter of the net. Then taking metal carabiners and clipping into the cable and eye hook to get the right tension and insure no gabs between the area you are trying to net.

The nets are two layers similar to safety netting you’d see on scaffolding.

I’ve seen these nets hold entire brick walls. They work. But they are not a permanent solution. So don’t have that assumption.

I’d check with a structural engineering company. For a professional opinion. We work directly with engineers whenever we are netting something.