Years ago I built this table, while it is not the best work, it is the best table I have ever built.
It is very solid, the legs are 4x4s and the top 5 2x6s. The floor of my shop is wood, and normally it is only me moving the table. I stapled pieces of felt to the bottom of the feet, and they worked for a while but now are worn out.
I am looking for an idea of something to put on the feet to make it both easier to move across the floor, and keep the table from marring the floor.
I am thinking pieces of leather may work well. I have tried the plastic things that are supposed to make furniture glide, and they did not work at all.
For hardwood, you want the felt sliders, not the plastic ones. They come in all kinds of sizes and thicknesses. I have them on everything and they work great. Just keep in mind the heavier the furniture the thicker and more coverage you'll want underneath.
Editing to say, I see you've used your own makeshift felt solution, but the ones made specifically for furniture may work better as they have some layers of harder material that make them more sturdy.
Thanks, I have only ever seen the plastic sliders in stores. I found some felt ones online and ordered those.