I usually just sous vide mine, though I don’t think Todd has a sous vide. That would not be a bad purchase, though.
It is a lean meat. While testing higher protein, low fat, I fasted about 32 hours, exercised, and ate around 36 hours. I ate about 1.5 pounds of London broil, which is 200-220+ grams of protein (depends where I look; the values are actually all over the map). That’s the one and only time I got physically sick from too much protein.
I will say I have not tried these long-cooking techniques. Most of the recipes I see are marination + quick cooking, though there are a few long cooking times. Not many though.
Here’s a braise that uses the oven, but I assume you could do this on the stove:
I basically always do long cooking in the oven, but that’s because my cook top sucks. And, it’s “set and forget” in the oven, as long as you get a good temperature going. With the stove top (for my crappy cook top), I have to adjust things.