I like this idea better! I assume the high strength option? I'd worry that the light duty one would stretch and drop the load.Check out McMaster-Carr, they've got a pretty good selection of cargo nets:
As Sequimite mentioned, Harbor Freight also carries a few options: https://www.harborfreight.com/catalogsearch/result/index/?dir=asc&order=EAScore,f,EAFeatured+Weight,f,Sale+Rank,f&q=cargo+net
LOL!!! That reminds me of a place we played and the elevator was broke; they apologized and said they were trying to get it fixed. Thirty (30) years later, I play there again...same story!Look for an elevator.