Bare, but it is important to make an erotic trip of getting to that point. The 'forced' undressing, or skirt-up/panties-down, must be made part of the foreplay. Also, the bare bottom gives a proper sound when spanked with a properly cupped hand; again to aid in the foreplay's build-up.
Both are good, naked is better an my wife loves being spanked which is a bonus.
I just started spanning with my wife. I like the bare bottom beaus wife the readiness.
Neither are my thing but I'll happily indulge her if she wants me to! Looking to be as GGG as possible!!
With or without clothes. In public or in private. When the urge hits me, I love nothing more than to spank her ass, and she loves it...
Bare bottomed nothing better than the sound of the pop off her flesh.
Always bare, unless it's a quick shot to get her attention.