Low tide flats accessible w/o boat?

Anybody know of any spots that aren’t some generational family secret? I’m only in Charleston 'til next monday on account of a new internship I’ve picked up… Anyway, I figured my best shot will be to hit the falling tide tomorrow, and I’ve checked google maps with nothing too promising…

Also, anybody been able to cast net for bait with the colder weather being here and gone?

thanks guys