I did my own made up version of a potato diet when I was in college. I was watching Oprah; she had a guest on explaining the nutritional powerhouse that is the potato. I decided to eat only potatoes plus skim milk. I thought potatoes were low in calcium, I heard the show guest say that, so out of caution I added skim milk. I ate 5 potatoes per day, peeled, cubed, then microwaved. I poured 1/2 cup of skim milk over the thing after it came out of the microwave and ate it like cereal. I was 19 and lost 30 pounds in 30 days and the weight DID NOT COME BACK. I was 220 and lost to 190. It was amazing. I was still in the mid 190s when I was 22. I was damn hungry sometimes in that hour before my next potato, but much of the time I wasn't. I had only one off meal during that month, which was half a huge hamburger my friend's uncle bought for us for some special occasion. Potatoes only do not cause so much hunger. I wouldn't add the skim milk ever again, but I did lose some major weight.
RE: potatoes plus meat: I think mixing the potatoes with other foods causes hunger. When I decided to try the Shangri-La diet, I ate potatoes during the day and would eat a light meal at night of shrimp plus cauliflower or perhaps wild caught salmon and broccoli and took MCT oil shots. I actually lost more weight coming off the potato hack doing this. If you want potatoes plus protein, I would separate the protein from the potatoes, and only mix the protein with a low carb vegetable. I feel the same way about the MCT oil, must be taken alone Shangri-La style (no food/flavors for one hour on each side of the shot). This creates the appetite suppression, as do plain potatoes.
I got the idea to separate foods from reading Stephan Guyenet. I like his rules. Don't add salt to food, if you must have salt, mix it in water. Don't add fat to your foods. If you want butter, eat it by itself. You don't have to eat them at separate meals (although I do), just don't mix the together. These are seriously intelligent suggestions. He has list of recommendations for weight loss - basically to follow a whole foods diet, eat potatoes for starch, lower the food reward. There are several tiers, picking off the low hanging fruit (no processed crap), down to limiting the diet to just 3 foods for a SHORT time for weight loss (beef, broccoli, potatoes, or something similar). Then he suggests the Shangri-La diet is another method of accomplishing the same thing - weight loss by lowering the fat set point without hunger (addresses leptin resistance by lowering food reward). I decided to apply them both and stepped off of the potato hack into even more weight loss.
I am down 3 pounds since starting this round of the potato hack (actually down 6, but I'm not counting the first three that came off over the weekend after a Halloween bash 'cause that was just bloating as I eased into the hack).
2005 Low Carb - lost @ 80 pounds slowly, avg 15 pounds per year
2010 Paleo Diet
2013 Stephan Guyenet Low Food Reward/Seth Roberts Shangri-La with MCT Oil
Last 40 pounds lost with protein-sparing modified fasts, potato hack, and low food reward/Shangri-La Diet with MCT oil.
Now down 120+ pounds lost