Family does crushed cars (we are crusher). Biggest thing is make sure anything that can fly is removed. 4 chains per stack. Check and recheck and recheck chains and repeat. Crushed cars settle as driving and chains will loosen. There are some other car crushers I refuse to haul from them. Make sure netting is all way down side. Get zip ties and tie to rub rail. Also zip tie bottom and top bundles wrap together. Any questions I’m your guy.