Assuming that you'd prefer not to hang them, something you might look into is seeing if the threading on the legs is a standard thread. If so, you might find some locally obtained hardware that will allow the two units to be bolted together in the middle, and then use the standard legs on the ends. If I recall correctly, some are threaded one way, and some another, so that could complicate things though.

I have to call Acan to get some lights coming today, I'll ask them if they've heard of any novel solutions for this mounting situation.

Steve