If i wanted to overkill on frigs in a C1, i would go

1 toon in drake with a target painter
1 toon in a loki with light drones and webs

1 toon in a cheap ecm frig for scout/jamming

In order to kill frigs, you can either slow them down, or make their sig radius bigger. Imagine that when a missile explodes, it creates a ball of fire of a certain size.

For explosion radius, the smaller the missile, the smaller the radii with the explosion "damage" distributed around the radii in a ball. If the targeted ship has a large radii, all of the damage will hit the ship. So, a light missiles hitting a battleship will do max damage because the whole explosion radii is absorbed by the ship, but a cruise missile does next to no damage to a frig because the frigs sig radii is only a small percentage of the explosion radii. Explosion velocity works in a similar manner, except this time its the velocity of the explosion vs velocity of the ship.

A longer and better description of missile mechanics can be found here

http://eve.allakhazam.com/wiki/EVE_Guide_Weapons_101_-_Missiles

Basically, in order to kill frigs, you need to slow them down, and increase their sig radii.