Not especially good at that trick personally but I've had some luck with it backside and then frontside before on curbs and ledges and both ways I remember would work best when approached like an alley oop feeble. You probably don't want to think of them as 180's into anything or you might get a few like that but they won't be the locked in kind and feel more like a weird 180 into 50-50, you do want the back truck to catch the edge but it should feel more like an overturned trick, also so you retain wind up for a decent pop out back to regs. Frontside in particular I remember figuring out on a random red painted curb in San Francisco that was slick and slightly banked so at first I would come in almost perpendicular and pretend I was doing a basic feeble on coping, slappy style, eating the grind a little and then pop out back to regs. And then after I got familiar I wasn't scared anymore of achieving getting into the same overturned/backwards feeble position but approaching from the side now and popping into it front board style. Haven't tried one in years, I reckon that's one of those where the obstacle you try it on matters and dictates a few things.