applying bed liner to the tub is a really popular thing now. i used roll on herculiner on my tub, chucked the carpet, and never looked back. i would highly recommend that over getting a new carpet. plus, you can bed line it (which will also help prevent body tub deterioration), and then put carpet over top. before i lined my tub i got the vinyl "carpeting" that you had to cut into shape yourself, it was horrible. i screwed it up so badly i had to throw it out half way through the project. it was a waste of $200. if you do decide to go with carpeting though, go with the pre-cut it will save you time and a headache.