Carb/Fat profile on Workouts

How do you guys use the carb/fat profile on structured training workouts? Do you use this to guide your in ride fueling needs?

I use it rightly or wrongly to guide my tempo rides. I look for the carbs and fat wattage to be equal and then ride within 5-10 watts lower than that at a cadence of 45-60 rpm. I did talk to Steve Neal about that and he said it was not what it was meant for but try it and see.

I’ve not used it for refuelling, but maybe I should

What I’m trying to understand is, while I know that sessions of about an hour don’t need fueling, some of the more intense ones should, especially as they get over 60 minutes. Trying to understand if this can be used as a guide for the planned intensity and decide whether or not to mix a carb drink or go without.