Brain Hutchinson and Brian Hemmingway (Dan and Bens dad) were very successful on 172's in the mid'ish '70's, mixing it with Rathmell and Lampkin regularly.
Just be thankful it's not a Cota 123. They are impossible to get tyres for these days.
They are a great trials bike for small and light people
Walter Shultz (5'2") used one to win the SA champs on one.
