I reckon most braids float, certainly the older, more established ones, but whats the advantage over mono when you're float fishing?........"
I can use 30 - 60lbs line and not break off on anything (see below...), or leave snagged baited rigs because the hooks I use will straighten before the braid/trace wire goes.
It floats reliably, which most monos don't in the kind of breaking strains I'd use as a piker unless you grease them, which attracts dirt and crap into the bail arm roller on your reel.
It also lasts forever as long as it doesn't get a nick, so it's actually cheaper in the long run than changing mono three or four times a season because it's gone all twisted and ribbony or you've knocked the stretch out of it.
Sunlight doesn't degrade it either.
It has zero stretch so I can often wind down and feel a fish on the end before nailing it.
I've bust off twice on a fish in four (guessing...) seasons, both times I'd have have bust on mono as the fish went round something abrasive.
The first time I was fishing with Rontroversial and one nailed a livie under the rod top and went round a bit of metal or something and I clamped down when it started grating, which was probably a mistake, the second time I was fishing over a bar and I assume there was something sharp on it.
I'm sure braid revolutionises trotting for anything once you get used to it.
When I used mono all the time, busting off on snags was a lot more frequent and I also lost a lot of fish where I hadn't nailed 'em because of stretch in the line.