You don't have to take the cowl off each time you fuel if you use 3 lines and a fuel dot. You will have to remove it to mount the fuel dot holder.
Mount the fuel dot holder through the side of the cowl, leave enough length in the fueling line so it can be pulled out through the holder. Once the tank is full, plug the line with the dot and push it back through the holder until the plug is seated in the holder. That is the way I have mine set up.