I think these type questions are very difficult to answer. What works for one may not for another. We all do things differently and have different components to our systems. I could say, yeah amino's worked great for me. But there's so much more to the story in the how's and why's. There's also the time factor. Things don't happen over night and you should never make multiple changes at the same time because you won't know why something worked or didn't work and every combination in between. Make a single change and observe for a couple weeks minimum, preferably a month to see how the system responded. With that said here's my story.
I never directly target fed my corals. Starting out I had enough problems with organics that whenever I tried it they would go up and lead to other problems. I think that until a system matures and you've learned how to handle the overall stability of your tank that any coral feeding should be held off. Once I got things under control and learned the complexities of a marine system I had stopped dosing amino's I had also stopped using socks and started blowing off the rocks more often along with stirring the sump up real good. I had finally got my ATS dialed in and had a firmer grasp of just looking at the tank, I could tell by the look of the coral how things were. This is when started adding CoralAmino to the frozen I fed the fish and a couple time a week I'd shut the skimmer down for four hours at lights out and dose the amino directly to the tank. Growth improved and the colors became more deep & vibrant.
I also do my lighting a bit different than most do. I do a 14hr schedule with whites only for the 1st & last hour. Whites start at 7am then the blues start at 8am. They both have a two hour ramp up & down. At 8pm the blues shut off and within 15min the coral PE gets to it's max and the feeder tentacles are out on the corals that have them. This is when I blow the rock work down real good and stir the sump up. On the days I add amino I do it once I'm done with the rock and the tank is a dusty cloudy mess. People often ask me why I run a skimmer and an ATS and It's because of the lack of socks and the amount I fed the fish, which in turn feed the coral.
In the end my advice would be to try it. Just do it at night with just the whites on or after lights out and shut the skimmer down for four hours. If you don't have a controller or timer, then just shut it down over night. If you don't turn the skimmer off it will pull all the amino's out in a couple hours and the coral won't have the time to take it in. I'd do the same thing with feeding the coral, let that food sit in suspension for a while.
Disclaimer... If you have vermetid snails I wouldn't do most of this. As I can attest, you'll have them everywhere.
