Hello,
I used to drink Gatorade about 5 days a week when riding my offroad motorcycle, I only quit because of the high calories and carbs. I have found Propel Zero (the strawberry flavor) is a great replacement. It has all the flavor but isnt nearly as bad for you. One reason I kept taking Gatorade though was that I've read sugar triggers your body to absord salt better (which for CF people is important). I also take buffered salt suplements when riding to decrease cramps.
Good luck!
Ben