Originally Posted by utopia

Assuming you haven't had a cowl fitted before (or else you'd already have the brackets) I think its worth smoothing any roughness from the underside of the cowl before you fit it. And/or maybe sticking something soft over it.
My bike has a scuffed rear seat section due to this, and it looks messy whenever you take the cowl off for pillion or luggage.
The two thumbscrew bolts (same as on the toolkit cubbyhole) that hold the cowl on drop out easily too.