Trouble adding a fillet to a skateboard

Hello Solidworks Comunity,

I have been trying to add a fillet to all of the edges on this skateboard without success and was hoping that someone could help me with it.

I have used the fillet tool (both the constant radius and face fillet options) without much success (I am no expert on how to use this though). I have tried using the swept and lofted cut tools without success (you can see the sketches in the attached file)

I have gotten to the point now where I am pulling my hair out about this! Is there any way that I can easily add a fillet to all the edges on this board? Or any way that I can add a constant radius fillet to all the board edges?

Thanks for your help,

Aitor

SolidworksParts And Features