My engineer recommends Mister Muscle for shifting the bugs on the wing leading edges. If you do hit a swarm it's a good idea to clean them off before you go home and they dry and go hard. It does work ...honest. With regard to the use of silicone polish I believe there is a substance which neutralises it. At least that's what I was told when I took my car in for some respray work recently. Totally agree about Plexus. It really does do what it "says on the can".