I was fascinated to see how Snr. Bertolini hunched forward; with his chin over the front wheel, groin against the headstock, and his shoulders resting on the handlebars, to stop his front wheel losing traction on the wet downhill parts of Giro Stage 7:
Have a look:
http://www.velonews.com/article/9209...s-giro-stage-7
Does this really help, or is it mere schoolboy psychology?