So basically you press left click or right click so you hand extends out. Your hand will stick to the button for a short amount of time and in that time you have to hold down the same button so your hand sticks to hit. Don't let go of the button until the skip has been completed.

Enable the Ignore Mouse While Running and Not In Focus option at the bottom of the layout settings so when you're running you can't accidentally click on your LiveSplit https://imgur.com/a/ohIsfrQ

Have you gotten the movement speed upgrade at the Duke?