Do some schools of hung gar only teach (or focus on) the tiger crane form?
I don't think so, not if it is taught as a complete system, then it should offer more than just tiger/crane form.
No. Hung Ga is a curriculum. There are some minor differences between them and some don't teach certain forms, but they usually have the core system in common.
One of the Hung Gar Grandmaster Wong Fei Hung's disciples, Lam Sai Weng started a school with a focus on Tiger-Crane Paired Form, and he named the school, Tiger-Crane, Fu-He M'en. The Tiger-Crane Paired Form is a popular taolu within the Hung Gar system, however, the taolu of Wong Fei Hung incorporated techniques from the Lama School (a popular CMA system during the later Ching Dynasty period), and the Buddha-school, to extend the movements to 108. Thus, there are variations in this taolu, as well as the syllabuses amongst the Hung Gar fraternity. The Tiger-Crane taolu is just one form within the Hung Gar school, and the syllabus includes other forms and weaponry. Another taolu, the Taming the Tiger Fist is said to be the source of the Tiger-Crane Paired Form.
