I have a ride on mower with trailer which I use to bring heavy materials to a new area of patio. I need to access the far end of the patio and I can choose between driving over a rough area and possibly puncturing the trailer tyres (they've been punctured 3 times by thorns in the last week); or I can loose lay the old patio slabs to provide a base for the mower/trailer, but would that break the slabs? I've got some old planks of wood, but no boards to put down.