Now, this isn't my idea, but I want to see if it's any good. Ahem. Basically, the idea is that one could potentially befuddle the Borg's adaptive shields by using that adaptability against them... somehow make them believe a different weapon on a different frequency is being fired at them. Thus, they adapt to a disruptor blast, but get hit by a phaser instead. The false readings would of course be totally randomized. Good idea? Bad idea? Just give up and try hitting them with a baseball bat instead?