This pump will inflate your board in about 8 or 9 minutes via your car lighter attachment. It has a deflation chamber which helps to draw the air out for easier rolling. At 20 psi it is more powerful that most that are 15 psi.   At Falcona Longpaddles we inflated well over 100 boards with one last summer with no issues. There are multiple gaskets so if you are having a hard time attaching it to the board just put a thinner gasket on the adaptor.