Don't you have chains or arms that can be adjusted to stop that? On my Ford, the arms swing into the tires when the 3PH is empty - the chains are positioned to stop the arms from swinging inward, not outward. That's when a bungie comes in handy. The only way they swing into the tires with an attachment on is if I don't tighten up the turnbuckles.
On my Kubota, I changed to telescoping bars. They stay where you pin them with or without an attachment................chim