@skorokithakis , I missed the whole discussion during a souper. Yes, you need a pull up to 5V so that when gate isn't driven Vgs is 0V to make the OFF state. Then, to turn it ON, the gate must be bring to GND, using a GPIO directly with a diode since the GPIO isn't 5V tolerant, or with a second stage N-Chan MOSFET in between. With the diode solution ON will be done when GPIO is LOW, while with the second stage mosfet, it will be the reverse. Personally, I would rather prefer the second stage mosfet.