Can I eat coconut oil, macadamia nuts, or chocolate while on the VLCD?

It seems like one of the most popular deviations from the protocol is the inclusion of coconut oil, macadamia nuts (or MCT oil), and chocolate due to the claim that these foods contain fats that will increase ketones and therefore increase weight loss while on the HCG protocol. These foods are NOT ALLOWED while on the VLCD portion of the HCG diet and can have the same negative consequences as any cheat on the VLCD.