At the end of the film, Abel's father, Ernest, recalls how Abel's brother had hugged him the day that he committed suicide. Ernest then remarks that he found it strange because it wasn't Frank's way. This dialogue is taken directly from a scene where Abel is talking to his mother rather than his father.
Get in there!
After pulling Gus' body from the river, Abel and Joey's boots and pants are perfectly dry. It would've been impossible for them to pull the body from the river without at least getting their boots and pant legs wet.