Always, always, always carve your name deep into the clay before bisque-ing. Another option on the wheel: You will get the larger, flatter pieces to adhere better to the wheel, and therefore get more control, if you use slip to paste a piece of roofing paper, cardboard or heavy wet burlap or something to the wheel first, then attach your clay and work it. Then when you want to pick up, say, a big flat plate, it doesn't flop all over because you just pick up the whole piece of roofing paper. Since you'll likely be the only person around who does this sort of thing, you can get some kind of "signature" paper that leaves a texture pressed into the bottom until you are ready to bisque, thereby marking it as yours.
Girl in my undergrad ceramics class stole a piece that had been made by another student with this type of pattern on the bottom. She hastily carved her name, then bisqued it real quick and tried to pass it off as hers. She got an F for the course for stealing someone else's work, then had the nerve to argue about it, whereupon it was noted on her transcript that the F was for cheating. The dumbest part--she had wanted to transfer to a "real" art school the next semester because she had flunked out of her science major, and the portfolio she had submitted to Moore, Pratt, Parsons, etc. was apparently good enough to get her in--except this F for cheating would mean she wasn't going to any art school anywhere.