They are designed to keep the wheel from slipping forward during a high torque effort like a standing start or rolling jump.
In fact, that’s the preferred method for stopping this from happening as opposed to making the wheel nuts gorilla tight. This is why some manufacturers even make track disks using allen bolts which cannot be torqued down as hard as track nuts.
You can fabricate something using bits from a local hardware store. Look in the metric section. You may have to buy two nuts for the machine screw and tighten them against each other to make a tip that you grip with your fingers to manipulate the screw in and off. I’ve made such before. It all costs less than $5.