I just stare at the algorithm while mindlessly performing it. After about 20 or so times, I do it without looking for a bit. I try it with my eyes closed for a bit after. I just keep drilling it into muscle memory and worry about recognition later. At least this way I'll know what to do when it comes up in a solve. I usually memo 2-4 algs a day this way and I don't think I've forgotten any. My recognition isn't the best but I can at least do them.