As the years progress, I find that weeding my gardens is always the worst possible task for me. I can't handle the bending for any long period of time and the task gets to be too much for this old body.
My favorite tool these days is my Telesco Weeder. The business end of it that weeds is only 2"wide by 5" long and the handle is 4 1/2 feet long. That little stirrup-type head is stationary and gets into the smallest places and can root out the tiniest weeds before they get dug in.
I don't remember where I bought this since its been some years ago, but the name on the handle clearly states Telesco Weeder so maybe somewhere online there is a dealer that sells these. I highly recommend it.
One of my readers found this on Amazon at: