Rails are definitely not my strong suit in the freestyle game. I feel like on most features I usually zeech even when I feel committed to greasing. I try hitting it as centrally as I can when the lip allows for it. Doing lipslides actually helps me when the feature isn't too hectic, because that is just more of a committed maneuver in general. But I don't want to have to resort to lipslides always, they are hard haha.
My brain will always slightly err on the side of 'safety' and just zeech a little bit, even if it is 85* or so. On harder features, I balk so hard, I sometimes just do a 5050 on accident which is actually kinda lit lol.
Tips or tricks? Please no troll answers :p lolz