How do you disable logging?

I was trying to look at Tlog files when I discovered MP starts recording anytime its turned on .
I do not want this default action . Like many people most of my time in this hobby is spent on the bench .
When I found where the files are kept I discovered a thousand of them . 90%+ dont have any flying going on and can be erased . It would take days to do this .
I would like it so AT THE FIELD I can enable logging before takeoff . This way the only