I find that if you tuck earlier in the side hop then it brings both wheels onto the wall at the same time but still keep your weight slightly towards the front so if you dont make it then will land on your crank/pedal. And its all about the preload as well so just before you kick make sure that you are nice and low and mabie try keeping slightly further back over the wheel, this worked for me. Finally try changing how far you are away from the wall before the side hop this makes a huge difference, its takes a while for it to feel compfortable but its well worth th effort.