I don't carbo-load anymore. And, frankly, the typical American diet is carbo-loading enough.
I don't add GatorAde ( etc ) to my water unless the race is going to be over 90 minutes. I find I can enduro for about 2 hours and then my glycogen reserves are gone and fat-burning doesn't cut it (just as the paleophile endurance athletes predicted).
For that, I will gladly add some yam and even fruit juice to my breakfast ( you *will* burn it off). I haven't added any recovery drink to my hydration pack because I have always had time between test sections to eat some protien, fat, and a hunk of microwaved yam.
If I thought I was going to be racing a three+ hour hare scramble or an enduro where I was behind the clock. I would opt for 33% recovery drink in the pack S well as some calories in my roost pack or in the pits.