WOO: device for measuring jump height

http://woosports.com/

It's made for kiteboarding specifically but they say they're working on that:

July 23rd, 1:46pm
Will this device work for wakeboarding? Average jump height is maybe 6-7
ft, duration under 2 sec I think.

July 24th, 9:02am
Hi Alain,

Currently we are refining our algorithms to be able to cross over into
wakeboarding appropriately. Right now the WOO will discredit jumps under
1m. Stay tuned for future updates!

Best,
Tyler

Thoughts?

Personally, aside from device sensitivity concerns, I'm wondering if the device will end up measuring jump height from flat water or the top of the wake.

This is how it measures height: http://blog.woosports.com/tech/how-d...g-jump-height/

On this thread [1], another device was mentioned (http://www.xensr.com/), it claims support for wakeboarding, but they're currently still taking pre-orders.

The thread [1] quoted the following on how the Xensr works (no idea where the quote came from though):

The XensrCase is looking at your motion 400 times every second. It's examining your G loading (acceleration) in all 3 axis, your angles (gyro), keeping track of where the Earth is (GPS + magnetometer) and watching the air pressure. All of this data is used to determine your precise 3D location, and also watch for jump events.

Many assume that Xensr's TruMotion technology uses the altimeter for jump heights. This is incorrect. Xensr computes your jumps based on movement data For water sports, the Xensr Case is sealed against water in an airtight case, thus preventing any reliable air pressure changes to be measured rendering the altimeter useless. The 3D measurement from TruMotion gives jump height data to less than one inch of precision.

Sometimes it's as precise at 3mm and averages around 1cm of precision. At worst, it's 1 inch of precision, so that's what we use for our precision claim.

[1] http://www.seabreeze.com.au/forums/K...eight-of-jump/