Whats the most effective way to handle sand patches on gravel trails without sacrificing speed, and why do so many riders insist on using outdated techniques like unweighting the bike or dabbing a foot down, when its clear that these methods only serve to disrupt momentum and increase the risk of a crash? Is it really worth the risk of wiping out just to avoid a little sand, or are there better, more modern techniques that riders should be using to navigate these treacherous sections of trail? And what about the role of tire pressure and bike setup in navigating sand patches - are there specific settings or configurations that can make a significant difference in terms of traction and control?