The searchlight looks fantastic Bakster!!!
And the Enterprise is coming along well. I know what you mean about fit issues. The one where the engine pylons joined the secondary hull gave me fits on mine. I'd heard lots of good stuff about Polar Lights but this kit annoyed the krap outta me. Funny, their Klingon battlecruiser fits way way better.
Interesting idea about the Rub-and-Buff. I've heard of people using it for stuff like NM finish aircraft and even metallic dragons for stuff like Dungeons and Dragons figures. Never used it myself though. You could always just use an old model or one you got cheap as a guinea pig to test things out.