Get a pair of GTS headlight covers for about $50. I've been using them, and here are my findings:

1. They really look good
2. They keep the gaskets in place, no more glueing
3. Because they seal outside of the OEM gaskets they keep the rain and water out better.
4. They provide extra protection from road debris and protect our $300+ lights for only $50.
5. Did I mention they look good, oh yes I did

Note anything other than CLEAR covers may be illegal in some states, but they come in Carbon Fiber, and Smoke(dark gray) colors.