Thanks for the comments folks. I'll admit to being a little provocative, but only a little!
Andy, the river is the Calder "above Brighouse" and Loafers are clear plastic "balsas".
George, you make beautiful floats and I'm a Philistine!
On the subject of
clued-up chub, all the chub caught by Mick and most of the chub caught by me in that article were caught on loafers. If I need to present a small bait delicately on a smooth flowing river of course I'd use a stick float (and I say this in the article), but in many conditions and on many rivers, using a heavier float gives much better presentation.
Grayling are often quite happy to move around in the water to take a bait, but when they aren't in a taking mood or if they are bigger, clued-up fish then you will need to get the presentation spot on. This means working out where the fish are and then putting a bait right on their nose. This is where short trotting comes in, enabling you to get the presentation just right at just the right spot.
Neil, let me know when you can make the trip oop North and I'll organise a day or two!