SadCuzNotTcklsh
I've never tried it but have read the best way to bury someone in the sand, in order to tickle his or her feet, is to dig a deep, narrow hole and sit the victim in it knees-to chest, arms to side - that way with so little leverage, he or she would have trouble trying to climb out. Then bury the person so only his or her feet and head are above the sand. I guess wet sand would limit mobility better than dry.
This girl here, while a small-looking woman, uses her weight along with the sand to victimize her ticklee. Plus, maybe getting tickled drains him of energy; most ticklees involuntarily try to fend you off, but I've had a couple who essentially collapsed as if their muscles went on strike. And, finally, he may like it and thus does his best not to resist her. I'm a dominant tickler by nature but must admit I'd let her have her way with me, albeit with revenge in mind!