After buggering around with strike planes with no gun (the CF-104, to be specific), I find myself doing something that I believe is frowned upon.
Since my beloved Zipper only carries 2 bombs, I commonly find myself bracketing my target (One bomb short, one long). Normally, in a Phantom, Hun, Scooter or anything else, I'd either have my trusty "Just-In-Case-I-Miss" rocket pods, if not a cannon or two. Or a couple more bombs. However, I only ever carry fuel tanks and sidewinders on my CF-104 along with the bombs, and since there's no onboard gun, I vent my anger by... well... rolling in and firing 2 unguided 'winders at my target. I usually hit it with at least one. Sometimes, if a target of opportunity presents itself after my first pass (parked aircraft...), I will spike it with a 'winder too.
In one of the Rolling Thunder books, I remember the main character getting in some sh!t because he used two unguided Sparrows after running out of ammo on CAS. I was wondering if there are actually rules against using air to air missiles to strike ground targets in real life.
...regardless, I'm still gonna do it in the sim. It's just fun.