Fueling for a Hot 100 Mile Ride

It has been a long time since I passed on some helpful material in the blog.  Coming back from the incredible Summer weather in Colorado, I find myself less and less interested in riding in the unrelenting hot weather of Oklahoma.  But Hotter 'n Hell will soon be upon us so training in the heat is necessary to perform well in these conditions.  On Monday, I received a newsletter from First Endurance and I found this article on nutrition and hydration strategies for endurance cyclists particularly pertinent.  I have had some success with the Liquid Shot this year but I have not tried their other products.  I would be interested in any first-hand reviews of the First Endurance products specifically the EFS Drink.