You could try changing the amount of carbs you eat depending on what you are doing. Days you workout hard shoot for more like 200g of carbs and days you rest get around 100-150g.
Not a bad idea. Not sure why I didn't really consider varying nutrition depending on day of intake. However, in order to eat that many carbs, I'd need to decrease my fat intake. Is this simply a matter of necessity or should I experiment exchanging fat/carb ratios on my workout days and see what fits?
Well, you can cycle total calories as well. Basically, what I do is have my "baseline diet". During the summer, it tends to look like:
breakfast- coffee with heavy cream, a 1/8lb beef patty, an egg fried in butter
lunch- tuna salad "sushi" (basically just tuna on seaweed and I dip it in tamari and wasabi. Sometimes top with sriracha).
dinner- taco salad with steak strips, guacamole, sour cream, and salsa, on a bed of romaine
But, if I'm doing a heavy day, I will add a mixed berry, spinach, and banana smoothie after my workout, and I will do the taco salad as a "chipotle bowl" on rice instead of lettuce. If I'm still hungry (usually after a big hike) I will do whole fat plain yogurt with almonds and honey (or a hardboiled egg with string cheese. Best combo ever).
Since I have a "base diet" and then a "busy day" diet, I don't take out any fat, I just add extra carbs and extra food in general. YMMV, but I find my appetite sways hugely with activity for me.
In general though, when you first lower your carb intake and increase your fat intake, even if you have increased your calories, you'll feel hungry for a while. Carbs are much easier for your body to breakdown and use, and our bodies really like taking the easy road. So much easier to say "hey I need more carbs!" than to digest all that fat. This does mean some people have GI concerns when first increasing fat, btw. Be warned. But like any dietary changes, your body just needs a little time to adapt.