Thats not a stone chip thats a rock !!!!!!!! even cheka plate would have shown some damage, there are some threads about various ideas but for using cheka plate it depends on the profile of the front of your van, the spray on stuff is okay, just, a padded vinyl blanket which press studs across works well but needs to be professionally done to follow the shape or it will flap itself to bits and as stated a stone stomper or a stone guard . The use of rubber mat across the back of the tug works well on tarred roads but on dirt if they aren't placed in the right spot will actually cause a heap of stones to be thrown at the front of the van each time you hit a dip in the road.