From what I've gathered, radar detectors are very nice, as you can detect the signal from much farther away than it takes to slow down...
Laser detectors are useless - by the time you detect the laser, the cop has already caught you.
Laser jammers - which are legal, since they are regulated by the FDA, not the FCC like radar - are super-effective against laser threats.
EDIT: man, I'm tired. it took me that whole post to realize nothing had to do with OP . Anyway, mount it high - you'll be worse at detecting laser but significantly better at detecting radar, which is really the only important thing.