Re: Curtis B mode
Hi Max, I would think that in the high speed championships, as in all serious competition, they choose whatever technique helps them to win. And that seems to be the single lever paddle, in which case mode A or mode B come out as exactly the same. I think it is the tolerance to small timing errors which makes the single level their choice. But the speed is in the 300 letters per minute range, ie 60 wpm, way beyond me and most others.
By the way, here is an interesting account of A vs B https://ag6qr.net/index.php/2017/01/06/iambic-a-or-b-or-does-it-matter/