How do you begin to choose what hooklength choice is right?
By that I mean hooklength material - Mono, flouro, braid, coated braid?
I never seem to know what to use, I have tried all of them but as my catch rate is so low I’m always unsure what to change.
I’m fishing the Thames and Hampshire Avon if that helps.
Feel ya pain bud.
For what it's worth, it's quite difficult to measure your successs against others as the more rod hours you spend on the venue the better your results.
It's not all down to rigs either, as even I can catch on basic ones.
For me the most important part in catching is down to knowing the feeding times or when the fish are most likely to be active.
Many times years ago where I use to fish, I'd turn up to a venue, and the guys on it are telling me I'm wasting my time as they've been there all day & had nowt. What they didn't know, was that I'd finished work for the day, and I've turned up not expecting to catch till 1-2am!

Graham put me in jelly wire years ago, and did alright on it Tony.
But the feeding times and bait confidence & fishing known areas will always help.
Are you using a bait you've caught on before & have confidence in?