With 574 a thin layer is good. A thick layer is bad and will cause leaks. Unfortunately I know this from experience.
Remember that all but a little of whatever you put on is going squeeze out.
I know a famous engine builder who smears 574 on with his finger. One advantage of putting it on with a roller is that it doesn't smear it into the holes.
I use 574 (smeared thin) on the webs around the main bearing. My thinking is that it might be important in duplicating the factory bearing crush and because those thru bolt holes are pressurize oil passages and I don't want them to leak.
-Chris