I don't use my dustcover. I have round piece of plexi-glass to cover the platter instead. I would not use a fabric dust cover. You could, but you should take care to lock the tonearm. I'm not willing to do that. If I forget, the $600 cartridge I have is at risk. Mine is similar to this:
http://www.hifigem.com/polycover-platter-dust-cover.html

Mine doesn't have the knobs though. This is mine, no longer available.
https://www.amazon.com/gp/product/B00BGJLLMA