I used mostly starches in my refeed. I would mash a yam with white rice and add some balsamic vinegar, I also ate white potatoes and had gluten free...
I've been on a Steak and Eggs diet for over 3 weeks with a refeed day on each Sunday. Kept my daily calories higher than maintenance and have gained...
For me the diet is really a focus on building lean body mass and reducing body fat not on weight. I have tracked calories and stayed calorie postive...