Spacemonkey! said...
What's with holding the depower strap in one hand when the bar isn't fixed anyway? Kites don't really need to be trimmed that much in most conditions, particularly hooked in with a reasonable throw on the chicken loop. To me any amount of trimming he is doing with the depower strap he could do with more precision with the bar, it would certainly be hard to be precise working the bar and depower strap at the same time/pointless.
I doubt he'd modify his trim system unless it yielded some advantages. He seems to have been at the front of course racing evolution for a few years now so regardless of what he says on the beach, I'd say his results on the water justify his mods.
From a technical perspective, it seems like racers are using big enough kites to go very deep downwind which means that they'll be on the edge upwind, and so anything that lets them keep their weight further outboard through gusts and lulls will be rewarded with efficiency and control gains.