I always stick to a lower carb to fat ratio year round, that keeps me at a max of 12% bf! which I can cope with. Pre show/photoshoot, I lower my carbs even more and limit carbs to only sweet potato and butternut squash, no white carbs at all!! I eat a lot of pork for the extra fat, I also tend to switch from chicken to fish pre show, as this helps the fat loss too. If I ever am feeling weak or tired, I'll have one high carb day every 10 days or so.