I would have to discourage sports drinks for staying hydrated. The sugar will give you a sugar rush then crash :/ I actually drink Pedialyte. It might sound weird, but if I get the tasteless Pedialyte and mix it with my favorite summer drink (unsweetened sun tea), I feel amazing. It is easy for me to get sick and dehydrated in the sun and heat, and Pedialyte is the only thing that really does help me without giving me to much sugar and making my mouth blue :)
Where could I get some of these insulated saddle bags? This sounds genius!