Cheers for that Sheik googled it and found this from secret scotland web site
Skipness Bombing Range
Bombing Range Approach Arrow
The approach to the range passed over the waters of Skipness Bay, and was marked by a large concrete arrow set into the ground adjacent to the east wall of the graveyard next to the remains of Skipness Chapel.
The arrow indicated the correct approach to the range, which was overlooked by observation posts crewed by observers who would report the result of each crew's run (using dummy, or practice, weapons), allowing them to adjust accordingly on subsequent runs. The range was primarily used by aircraft from HMS Landrail (RNAS Machrihanish), and for both bombing and torpedo practice. There were no targets on land. One of the two towers still stands at the entrance to the village by the cattle-grid. The other - demolished - is supposed to have stood on the point by the cemetery, where can still be seen the large concrete directional arrow in the field between there and the cemetery.