Braid as a hook lenght does NOT work. It just get tangled in the blink of a eye.
and yet it was regularly used by shore Conger anglers a decade ago.
It never caught on for boat fishing for Conger and seems to have gone back "out of fashion" for shore fishing now - perhaps the advantage (softness ?) is not considered (any more) to outweigh the disadvantage (price...and easy to tangle if in swirling water).
It is still, of course, being used by Carp anglers (where softness really matters) only they have gone two stages further :- use parallel unwoven strands of dyneema/spectra (so it is really,
really limp) and use a water-soluble stiffening gel so it doesn't tangle during the cast and becomes limp after it's on the lake bed.
If you are using a heavy strength (e.g. 100lb+) braid - and it is so soft there is no need not to - you can splice a loop into the end (and splice a hook eye into that loop as you create it) instead of knotting it.
Or you can copy the way "assist hooks" are knotted onto braided kevlar (but make sure the simple overhand knot is really tight and either shrink-tubed or whipped down, because dyneema/spectra is more slippery than kevlar)