Maybe two feet tall, Paul (if memory serves, a C-size motor).
My son and I were the only parent-child pair to recover both their rockets. I was a bit of a rebel with mine, installing the tail fins backwards for a rakish look.
Thanks. This one (taken with my first digital camera) belongs in my pantheon of lucky shots. Also lucky that day is both my son and I retrieving our rockets. So many of them ended up in the trees.