My favorite blog post on performance is Mladen's post on estimating 1 rep max with velocity and the Gymaware tool. I am a massive fan of the technology, and hope that the app develops to showcase what you can do with the system. I suggest all coaches forget about wasting money on force plates or other systems that simply are not showing value. The photo is how our friends from down under are using gymaware to validate with objective data what is going on with training. The system is light years beyond Tendo and the wireless bluetooth system works with iOS devices. Any facility taking power development seriously should invest into this technology.