I used to spend more time training and racing than just "riding"
I've seen error of my ways and the training aids are up for sale.
I have a 3,000mile only PowerTap 2.4 wireless model, alu/carbon hub. cadence, power, HR etc etc.
Used one summer and one winter training not seen proper use for a year now.
The wheel has seen little use as I race mountain bike XC so was only used a couple days a week as part of my power intervals.