Just stuck mine on
Word of warning do not rely on just the protective patches alone, the mud guard will wear through them, it will damage your paint and if your frame is carbon then that too, seen this on another forum to a few bikes
I fitted the supplied patches then put a double wrap of Gorilla tape over the top to make it extra thick
Another little trick you can do is fit 3-4 cable ties on each side of your seat stays then mount the mud hugger on top of these and then zip tie it on as normal
This makes the mud hugger have zero contact with the frame as it sits on the top of the zip ties