Why not have a look at their website and see how they are being marketed first.
No one is stopping anyone , disanled or otherwise,from using these things, just register items use it as the law dictates and there isn't a problem
On an interesting note, surfing for the disabled might want to check their liability insurance to see if PWC are covered
I'd hate to see them facing a huge liabilty payout because of any mis information they have been given regarding classification of wavejet as a "surfboard"
I know for a fact that the usual surf school insurance policies specifically exclude PWC use so unless disabled surfing groups have disclosed and got further cover....
www.wavejet.com