I would recommend any forms of the Pass.
I haven't been able to perfect the pass yet. I'm still practicing and getting better at it; I only discovered the sleight recently.
Although you asked for false shuffles/cuts, are you familiar with Dai Vernons "tilt" move? Using tilt you could throw them off by just showing them that the card isn't on top (yet).I regularly get busted by people who know that their card is on the top of the deck after I do a false cut like the Sybil cut. Does anyone know of a good false cut/shuffle that can get these people off my back?