Guys cruise the paths and benches around the temple, significantly the loop that circles the woods and leads to the toilet block.
Hang around on the grass, the benches, and the stone temple itself to see other guys cruising around. Use the pathways and benches to suss out the trade.
In the woods between the temple, main house, and toilet block, there are paths to explore, and cruises that lead to blind spots hidden from view, and secluded clearings beneath the shrub canopies.
Unless you just use the area to hook up and head to the toilets, it's not viable for outdoor fun between Oct - April, not just because of the temperature, but there is not enough foliage cover to shield any antics.