To John and anyone else considering the use of the golf bag carrier with built in wheels for transporting your keyboard, I urge caution. Unless some form of rigid panel is installed in the base, two things happen 1. The weight of the keyboard when being wheeled will cause distortion at the bottom, the bag will rub on the ground and wear through rapidly. 2. When both wheeling and carrying, pressure can be applied to the keys themselves causing damage to the key bed (it happened to me).
On the market now (in N.Z. anyway) there is a keyboard trolley case with extendable handle and built in wheels, fully padded and with external pockets for books and equipment under the brand name "Gator". A perfect fit for the KN6000 and PSR2000 and ideal for the job.
------------------