I've had the most luck in the late afternoon, meeting guys in the mens' room. It's located in the extreme rear of the store. Tis is a good place for under stall sex.
I love serious assplay like toys fists, but nothing beats a damn good fuck. Size can impress me, but experience is preferred. I prefer BB , but am HIV+.
Or how about a serious throat fucking. Guys always back off before I do.