Very nicely summed up, Mary.
Just that some may find doing full-time tuggie duty too much of strain, without other income for 'running costs' of life. Definitely shouldn't be expected for weekend flying or occasional rota flying.
Just did three solo winches in K13, finally. Been working hard on 'conversion' from aerotow solos, past month on weekend. Depending on my power flying over summer, may do tuggie training later on as well. Club where I fly, not likely as tuggie in Pawnee, don't chance or fancy it for now... It's good to have Super Cub for tuggie dual training towing single seaters. I'd say letting someone loose on Pawnee requires more experience than minimum UK 'standards'.