I think I've mentioned this before in other Gatorade-esque threads.
Don't try something new for the first time away from home on an expensive vacation trip
or, from my bicycle racing days
Don't try something new the morning of a bike race
I.e., experiment on trails you are familiar with, while trying to get conditions similar to what you'll be experiencing.
I personally dilute my Gatorade 50/50 on the bike, and bring it full-strength when hiking, but will often chase it with water in both cases.
I once rode solo from Nashua NH to Brewster MA (that's on Cape Cod.) I drank 4 22oz water bottles of electrolyte liquid and 2 70oz camel backs of pure water. Don't recall the exact date, but it was hot enough to meet my family at the Cape... That's nearly 2 gallons in, and I think I only stopped to pee twice. (Una_Dogger, if you're reading, that was 146 miles in 7:45 wall time, or 19.3 mph with 2 5-minute stops for input and output.) Of course I ate along the way too, but I never cramped up, and while I was sore the next day, it wasn't cramping sore.
Tim