I don’t have any experience with being on TRT or “cruising” between cycles. I still do a full PCT at the end of my cycle. So for myself I’d use HCG at the end during the time period between my last pin and starting my PCT making sure to at least give a full 14 days after my last shot of HCG before starting PCT protocol.
Normally when people go from “on cycle” or their “blast” to cruising or TRT however they wanna make it out to be they will use HCG during the blast or while on cycle. Some as well will continue to use it during their cruise and pct too to keep the kids working and etc. now. Normally when your going from a blast to TRT all that Clomid and nolvadex isn’t going to even come into play unless absolutely needed for sides. Some people prefer to do a mini pct at the end of the blast as well before the transition to TRT dose and some people just cruise right on into it only taking an AI where and as needed.
DO NOT run HCG if you have signs of gyno as HCG will only make it worse. For PCT a minimum of 10,000 IU's HCG is needed. When you have a proper PCT planned with a serm and an AI, and you want to run HCG during the last 4 weeks of your cycle, then you might only need 5,000iu's.
An anti-estrogen (Nolva, etc.) is to be used with HCG during your last 4 weeks of cycle.
IMO HCG is best dosed at 500 IU and/or 1000iu, more than that can cause too much aromatization, and some people won't react to less than 500iu. So during the last 4 weeks of a cycle, you shoot 500 IU of HCG twice a week or 1000 IU once a week. For PCT, 500 IU ED or 1000 IU EOD. Do remember estrogen is elevated by two ways from HCG use. Primarily from the sharp rise in testosterone, which allows more testosterone to aromatize to estrogen. Secondly HCG can cause a small amount of estrogen to be produced which is not from the result of aromatizing, and this is the reason that a combination of an anti aromatize such as liquidex/arimidex/letrozole and a estrogen receptor blocker such as nolvadex are ideally used. The nolvadex may also offer some additional benefit to help avoid a negative estrogen feedback to the HPTA during HCG therapy, which would otherwise slightly lessen the effectiveness of the therapy. (So run a small 20mg dose of nolvadex during the period of time you start to finish HCG)