It has always been standard practice to cross the chains on bumper hitches...The reason is if the hitch comes off the ball for some reason, the cross chains will cradle the hitch so it doesn't drag the pavement..I am not sure this is the case for a fifth wheel goose ball connections...if it comes off the ball, the chains will keep the hitch in the bed and not an issue in hitting the pavement....if the chains are long enough, it will take out your tail gate...but the chains from Anderson are short enough to keep that from happening...I planned on continuing to cross the chains, but will call Archie and post the final answer....