Do what everyone else is doing, go to independent contractors, and no need to worry about unions, trucks, maintenance, gas, tires, all the insurance, payroll taxes workers comp and on and on... etc, etc, etc...
The west coast longshoreman's union are planning another strike after June 30 to enforce their grip on commerce. We've already moved our inbound shipments to the east coast, which is also unionized but nowhere near as thuggish as the west coast.