It reminds me of being on a big club dig a decade or so ago. A chap was detecting parallel to me and stopped to observe as I dug a signal.
He sucked in his cheeks and shook his head solemnly and opined that I'd have a bad back bending like that. I responded that I didn't have a bad back and had never had a bad back. Further, I asked him if he did. 'Oh yes, had one for years on and off' he replied. I said 'Well, maybe you have got it all wrong then?'


63 now and still never had a bad back. I have always bent it and do a lot of garden work which involves more of the same. Plus I was a dancer in my youth and still can do all the stretching and bending exercises. Can still do the splits no problem.


I never worry about these aspects of technique. Other than the fact I am nowt for kneeling unnecessarily in the mud and getting my knees wet and dirty. I simply get the stuff out of the ground the way I feel is the quickest and least fuss. Much more important to put effort into the business end of knowing my machine and my permissions. And the OP certainly has nothing to worry about on that score so........