I returned to racing seriously again this year (did cross last year, but only did it for fun) and I'm having issues with accelerations. I seem to be able to match the first couple, but then can't recover and am done after that.

I used to be able to train for this by racing myself into form. Due to limited time and funds, I can only race so much and so have been concentrating on 3 minute intervals and high intensity hill repeats or short intervals twice a week. While helping somewhat, I am seeing limited results in actual application.

Would this be where a powertap would really help? I have never trained with one because I had a pretty decent handle on how much power I could put out in the past, but not so much anymore. I could get one relatively inexpensively if need be. My goals would be to be able to finish out the cyclocross season and to be in racing shape to peak in mid April of next year so that I could peak again for cyclocross.