Thank you so much for your replies.
I think I may have gotten myself confused - easily done nowadays I have to say, memory can be a fickle thing.
The tool I used was definitely a pull not push hoe (I think it's the pushing action I have a problem with!) & it was definitely old (before my dad had it my great uncle used it & I think his dad before that), but it may not have had the hooked prongs, I may have confused that with something else I've used. It could even have been a home made jobby!
I only wish I had 'saved' it from the tool shed when I grabbed the well worn in fork, spade, shovel & hook/crook - they just don't make tools like that any more!
The hoe I have is a nasty cheap thing with no cutting edge to it at all, it kind of pushes the weeds away from me, but leaves them intact so they carry on growing just in a different place. At least if I use a pull hoe they'll come closer to me & I can pick them up & get rid!
Anyway, I'm liking the look of the swoe, so perhaps I'll give that a go. Or I'll try to find an ancient tool at a farmer's sale or the such.
(Gosh, I can ramble on for ages about nothing at all, you can tell I spend most of the time with just the animals for company - sorry guys)