Actually, there are several protocols that are set up for using HCG during a cycle (Swale's being the most common and easiest to follow).
I recommend HCG usage during cycles. It will help to help your "boys" from shrinking too much and if used properly will help make your post-cycle transition easier.
HCG can also be used pre-PCT to help get you ready for PCT; however, it should not be run during PCT as it will continue to suppress HTPA, which is what you are looking to restore by doing PCT to begin with.
Dave_19, is that you in your avatar? If so, you look great. That's the look I'm looking to achieve myself (as far as bodyfat/muscle ratio). BTW, anything new with the liver tests?