I'm all for being regimented during the other 6 days of the week....counting calories and protein and taking the right supplements at the right time etc etc (although I do subscribe to the "macro ideology" I admit
).....but on that one day, well really only a half day by the time you get around to cheating, that is the time to just say fuq it let me eat what I want....fats with carbs, sugars, candy, chips, cookies, 1,500 cals at once and all that good stuff.
To be regimented on that day and that particular time is just taking all the enjoyment out of it as well as the spontaneous fun of eating "bad things". If you're looking forward to another PITA regimen on the cheat day, that is not exactly something to look forward too..which is the best part of the cheat day...saying "I can eat what I want in X amount of days". And if you know your nutrition as you say you do, you know 6-8 hours of overeating (mostly carbs of course) will not and cannot add any fat to you when your carb stores are just about empty from the previous 6 days dieting AND you are about to go on ANOTHER 6 days of depletion. Its just not possible, unless you have not been dieting properly that is.......