I am too old to enjoy "keep bending over" but I can still kneel and crawl so that's how I weed (and plant) now. Spongy kneeling pad for knee comfort.
For deep tap roots like dandelion and dock, I use a commando dagger (H got his in a leather sheath ,cheap, used, from Army and Navy stores in the 1950's) Back then apparently every boy scout owned one, carried in the sheath attached to his belt.
Slide it deep into the soil immediately below the crown where all the leaves start, a small vicious twist severs the taproot deep down and you can easily winkle up the corpse by tugging the leaf bunch. Japanese gardeners use a similar tool called a hori kiri, available in UK.