Here are some results of the surveying exercise we did in October 2017. The diagram records the height at one yard interval E-W and N-S across the entire lawn (28yd x 35yd). The height of each point is shown in millimetres relative to the SW (bottom left) corner. Who says we’re not metricated?
Approximate positions of the hoops and peg are also shown so you have a ready explanation of why your hoop shots went off course. Click on the diagram to get a larger view.