maybe you need one of these
http://www.surfersvillage.com/content/s ... dle-jumper But, more realistically, a Torq board is as tough a board as you can find before going exotic.
Btw, thinking 'nose diving' is thinking about things the wrong way. What actually happens is that you aren't paddling fast enough (or are in the wrong position) and the wave lifts up the
tail of your board. This naturally causes your nose to dip - but its not the nose's fault, its the tail's fault (well, its your fault of course). In any case, getting a shorter board doesn't change the outcome; its incorrect to think that getting 'rid' of a foot of nose give you less chance of nose diving. It doesn't really make any difference; you can nose dive on a 6ft board just as easily.
What you need to fix is your paddling speed and perhaps wave positioning. Paddle speed may be related to your body position on the board - if you are too far back on the board, the tail drags and you go slower. Nose diving is a pretty common thing for beginners but its actually fairly easily fixed - just read up around this forum for ideas.