In times gone by, I conducted a fair bit of training on TW types. One sequence that I found good especially for those that were having trouble with rudder control and cross winds was to have them "fly" the aircraft along the runway and put one wheel on the ground for a bit, then lift it up and put the other wheel down, then climb away and do it again a few more times. As the instructor you had to be right with it, but for the student it was an excellent sequence for learning control and rudder use. Enjoy!