Rather than during PCT, it should be used during the cycle at a low dose to prevent testicle shrinkage in the first place. Much less risky and more logical than waiting until they shrink, and then trying to "shock" them back to normal size with extremely high doses at the beginning of PCT. On top of that, it can slow down your recovery if used post-cycle. Google the SWALE protocol.
But, if your cycle isn't long enough to cause testicular shrinkage, it really isn't necessary.
i dont know about you guys but nolva and clomid are much easier to get than hcg. hcg also takes more knowledge to use liike mixing and also injecting. many just do orals. its not a bad idea to do maybe 1 time in pct.
Actually hCG is very easy to find with a little bit of googling. It is also very cheap. Mixing it isn't rocket science, either, so long as you have at least two brain cells to rub together. Also it can be injected subcutaneously, which is relatively painless, especially if insulin pins are used.