sust is designed to keep approximately the same levels of hormone releasing into your blood stream at any given moment over the course of about a week give or take based on a variety of factors. after that the only ester left in you is going to be the decanoate ester and you will cleave less and less of that each day. the point of multiple esters with steadily increasingly long ester half lives is to take the place of pinning Ed or eod and such.
people say because there is prop in it you have to shoot eod and I used to say and think that too until looked into esters a bit more and really thought about it. when you would pin again after a day has passed, the phenyl prop is releasing. with the isocaproate and the leftover uncleaved prop. that is just like another pin of prop.
and in fact, when thinking about the release timing, I would say that spacing your injections out actually keeps you MORE balanced. the ideal spacing wouldbe that you shoot again as the medium esters have been mostly cleaved, in other words around the 2nd half life as this is when the daily amount of test releasing I into the bloodstream would start to decrease.
if it ia designed to mimic Ed pinning by using multiple release times, and is designed for more spaced out pinning, you cN reasonably assume that non spaced out pinning would not achieve the best results.
that being said, I have heard that sust is often faked, often replaced by the cheaper an easier to make poor mans equivalent that is basically prop and enanthate. people whose sources are providing this kind of poor mans sust would be best off pinning eod or Ed and would probably notice that.
of course that is all just my own retarded theories and I have nothing to base Ito. other thang own observations, research and backwards-ass logic. i have never used sust myself lol.