Spiking speakers not designed for spikes?

Has anyone had good luck doing this?  I have some PSB Stratus Golds from 1994 that I'm having problems upgrading, so I'm going to try tweaking what I have.  They have these cheesy, wooden bases that I'm nervous about removing or drilling into.  If I do decide to spike these suckers, would anyone recommend outriggers?  Or trying to attach spikes directly to the speakers.
Thank you for your time!