If you're brand new, it ain't too bad just starting off learning basics but I've found I already prefer flat if possible. Makes scuffing a lot easier, especially when going in a circle. It's totally doable to practice stuff if that's all ya got most of the time. But I've quickly found I ride better the flatter my surface is. If you're working in a straight line, go perpendicular with the slope and you shouldn't run into speed issues unless you've got slope in multiple directions