I've never had to use the blast phase - but here are some options I would run if I was going to do so...
I should also mention the 4 options are based on how strong the cycle is - however in your
case, the two year blast and cruise would most likely be a good enough reason to run your hCG
a little heaver... based on an educated guess - not my personal use.
This phase should be ran in addition to the weekly dose during the cycle.
Blast hcg during the time period you are waiting for the suppressive compounds to leave
your system - starting the day after your last injection - up until 3-4 days before SERM treatment.
Here are four blast phase options - depending on your cycle.
1) 500iu's every day.
2) 750iu's every day.
3) 1,000iu's every other day.
4) 1,500iu's every other day.
Also you should take note - hCG directly stimulate's aromatization in the leydig cells (located in the testis) and
some people develop Gyno when taking high doses of hcg - so keep this in mind when running the blasting phase.
Here's something I can add as a personal note...
I've also been blasting and cruising for a long time (years) and run hCG throughout both phases
(blasting and cruising) - 500iu's twice a week - 5 weeks on - 1 week off... then repeat.
I run this dose regardless of the cycle... heavy or not - and sometimes take a few weeks off before running
the next hCG cycle.
About once every 12-18 months I bring myself off of everything for a short time to make sure I'm able
to keep my "natural" self in check... and have always been able to do so...
... which I believe is from running hCG regularly throughout the year.