I am thinking about purchasing the recycled rubber pads that go on your jack feet permanently. In fact i ordered one set but they were 10 inch and too big. Anybofy tried them. Mine is Winn 38Q 2016.
I have a set of these for our 9 inch Lippert jacks. They work great and keep me from having to get down and slide wood or other pads under, especially when it is wet outside. Our set of 4 was just over $100 with shipping - they have discounts and group buys. Just check them out. They are starting to make some for additional size jacks.