3top,
Reading around in circles - the SUP probably covers the fact that the pad when it is installed in the NORMAL category is to keep everyone happy.
When you use the drive the operating category may change to RESTRICTED or EXPERIMENTAL..
Looking at the restrictions you could probably do aerial spraying with it?
The use of hydraulic power is prohibited: in flight at IAS < 30 kt (56 km/h) and IAS > 80 kt (148 km/h)
Ask your friendly tech rep and confuse him as well?