Most barbel angler fish with carp style/weight rods, big hooks 8s on upwards, and line of 10lb plus. On the Trent its 15lb average, small river barbel anglers accepted.
The float trotting angler is fishing in a style that is all about compromise, again in my humble opinion. He uses a rod that mostly takes 6lb mainline weight, small hooks 12s and less, often 16s and sometimes lighter hook-links.
From a method of catching/landing it really shouldn't work, but it does, and again in my view mostly better than the ledger. Remember too we only fish with one rod, the ledger guys can/do fish two.
It's a very involved way of fishing as your always doing something. As you plummet the swim carefully, you also know the riverbed better than the ledger angler. He will often cast directly into a snag and not know. He will learn, but will not know exactly where that snag is. I plum the swim the Harrell way, and it tells me all I need to know. I may lose a lead or two, but I'm learning in the process. I accept some ledger guys may plum a swim properly, but none I've seen. They arrive and cast out, so forgive me if I've not mentioned the guys that do.
Do I ledger yes, but always in the margins with as little weight as possible.
I float fish at times when I know a bottom bait would be a better option, but I just love the feeling of teasing the fish to take my bait, rather than setting a trap for them to fall into.
But it's only my way, and to those that only ledger and love it, good on you.:w