Yes, I did use a dremel tool to trim the fender.
I tried various bits to try and make a cleaner cut with that polypropylene.
If you get too aggressive or in too big a hurry, it gets hot and tends to melt, then clogs up the bit.
It is best that you remove the fender and do the work in an outside work area since the plastic bits create quite a mess.
What sort of hugger are you looking for? Do you have an SP1 or SP2?
If you have an SP2, the Tyga hugger is a beautiful and affordable piece of carbon-fiber.
If an SP1, then Magical Racing makes an equally wonderful hugger, but will be more expensive then they Tyga unit.