How much pressure/torque on "stabilization" jacks?

AFTER leveling the trailer, I run the jacks down snug and add one-half turn. I recheck my wheel chocks and stabilizers several hours later after the tires cool down. The tires have shrunk slightly with cooler air in them so the chocks are usually loose. The ground & blocks under the jacks may have compressed and I sometimes add 1/4 turn to the jacks.