When I had my 8315SS, I used to leave the shank (with ball) in the receiver. It had a locking receiver pin. I'd place the WD bars in the rear storage compartment.
Remember to place a plastic grocery bag over the hitch.
1- So you don't get grease on your pants leg as you walk by.
2- So you don't hit your shin on the hitch as you walk by.
Sometimes I'd relieve the tension on the weight distribution bars(Equal-i-zer Brand
), then pull the pin from the receiver and drive away. The complete WD assembly would stay with the trailer. I had a lock on the coupler latch.