Here is what I do
I take the spare tire Zipper Bag (TIRE BAG CONTAINED IN THIS ENVELOPE) and place the jack in that bag. I then place that Zipper Bag with jack in the center of the spare tire with the Spring Clip to hold it in place.
I take a LARGE Black Plastic Bag and place the whole spare tire with Zipper Bag clipped to the center inside that LARGE Black Plastic Bag and Zip Lock the Black Plastic Bag shut. Slip that Large Black Plastic Bag with Spare Tire back into the Tire Rack under the Fuel Tank.
Yep......that is what I do