too late for that plus they had been putting mulch around the pins to keep the mowers away from running into the baskets... next time your out just look at # 17 & you'll see why they started doing this... they just need some fresh mulch out there...
i do like the idea of using something similar to the sprinkler control boxes but it needs to be a better design then just notching out the top of the cover because the pin is offset to 1 side of the hole so u can get in & unlock the pin... i am curious how they will hold up when a tire of a mower runs over them as well