If it doesn't have a grind base, it's not designed to hit sliders. Removable fins and steps do not make it for sliders. Basically you are going to tear apart your board and need a new one. Simply put fiberglass and rail materials do not play well.
Another thing to think about is how much fun flex is on the rails. I use a Vibe and while it still get beat up, it has handled the abuse much better than a traditional board.