my understanding is that you can't project a formula into the day ahead. so why not just a simple formula & imagine that the last item (or the direction it is taking) is actually a projection?
just to start the ball rolling, you could try (Ref(C,-3)+Ref(C,-2)+Ref(C,-1)+(2*C))/5 for one of them & similar for the other one.
creating an exploration should be easy. one could be looking for where the formula on the last day comes up higher than on the day before, etc.
amory