What about playing with a plectrum?

Generally the books are just as applicable to a plectrum pupil as to a fingerstyle pupil. All the pieces from Book 1, and almost all the pieces in Book 2, can be played just as well with a flat pick as with thumb and fingers.

Some ukulele players also use a soft, thick plectrum – usually made of felt – for strumming. These can be very useful in the early stages, especially for faster down-and-up strumming.