Reflective is tough to profile due to the nature of the white point (translucent vinyls have similar issues). Usually people just "marry" an existing profile that has similar ink retension.
Jamie's recommendation is spot on - even if that particular profile doesn't work well for you, there's bound to be one that matches close enough. This, by the way, is the only time I'd recommend this
. It's always better to have a profile for the material you want to use, assuming it CAN be profiled. Good luck!