Best feel for the spanker

For the spanker, what feels best? Just in terms of feeling for ones' hand, I prefer the sensation of my hand smacking a bottom clad in a panty girdle. And my all time favorite was to smack was the rubber Playtex girdle. In part, as I am in my seventies, might have to do with early experiences? What are your favorite sensations of what a bottom should feel like as you spank it. Is it covered (or not).