I have not used tie-downs with my awning. I would typically not have it extended in any type of heavy weather, and otherwise it seems to work well for me without tie-downs. I have had it automatically retract on an occasion or two with a gust of wind, but that hasn't caused any issues.
I do use jack pads if not leveling on concrete, but not the clip-on type. My pads are the commercial heavy rubber type a little larger than the jack feet. I usually drop the jacks vertically then slide the pad in place under the foot. It's a little awkward with my reduced mobility, but still doable, and only takes a few seconds per pad.