Here's something to consider...
Remember the thread about using an incandescent lamp as an HF antenna? Sure, you were concerned about variations in the load resistance and the challenges that might present to the finals with an amplitude modulated mode like SSB, but... In this thread we're talking steady carrier FM. Aren't we?
Near constant voltage, near constant current independent of the modulation.
Let's take this a step further. Visit any home handy guy store and in the lighting section you'll find a nice assortment of both incandescent and compact fluorescent lamps. Read the packaging on the CFL's and you'll find that a 15 watt fluorescent produces about as much light as a 60 watt incandescent lamp. That's a 4:1 ratio or 6 dB worth of lumen gain. A full optical S-Unit for the same input power - and - it's omnidirectional.
Apply the same theory to this situation and I'm thinking a nice, big, chubby CFL on a stick wired to the 2-Meter rig could be the ticket to many, many illuminating Q's.