Thats a simple answer !
This new formation was reported on the 16th of August. By this time of the year its almost dark by 9:00 pm and it stays dark till 5:30am - giving the circle makers more night time hours to create bigger and more creative formations.
This formation barely lasted one day - it has now been harvested by the farmer.
The shabby crop circle on the right was a little to large to make for the time of year - quite clearly circle makers run out of night time hours and probably run out of steam. Reported on June 18th in Yatesbury was slightly ambitious for the maker who didn't take into consideration that at this time of year we only get 4 hours of darkness - on cloudless nights you will be pushing 3.5 hours at the most !. But on August 16 ( date when the new ' All seeing eye was created ' ) circle makers would have at least 7 hours to play with. With a skilled team they probably would complete The Nettle Hill formation in between 5 to 6hrs at tops.