One of Fred’s friends, Dan Korb, pointed out the fasteners we were using to anchor the foundation to the trailer. Initially, we were using 5/8″ zinc-plated bolts with jam nuts. However, after finding a vendor who could supply them in a decent timeframe, they were all replaced with their Grade 8 equivalents and a gob of red thread-locker.
This increased each bolt from a load strength of 33,000 pounds to 120,000 pounds. The tensile strength of each one increased from 60,000 pounds to 150,000 pounds. So, yeah, we’re set.