Detuning a must for rails?
Recently I went to Big Bear to progress in my park skills. While there, one of the things I wanted to start doing and get comfortable doing is boardslides on rails.
Prior to this I had myself get comfortable doing boardslides on boxes. I have that down pretty well, but when I attempted my first boardslide on a rail I caught an edge and ate it. Figured I just didn't keep my board flat enough, but I attempted it 4 more times and every time my board caught an edge and flung myself forward. I stopped after that as I was getting beat up and didn't want to hurt myself badly.
I don't know if I'm missing something in my form or if it's because I don't detune my edges at all. A nice boarder I asked for tips noticed my edges are pretty sharp compared to his board. And it's true as I've always kept them maintained that way for days when there's icy hardpack. He said it's a very big hindrance and I'll have an easier time if I dulled them slightly.
Anyways, is it really a necessity to dull the edges for playing in the park? If not, what are some tips to keep myself from biting it when attempting a boardslide on rails?