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Since the more trees spiked, the greater the deterrent factor, one nail per tree ought to suffice.
To deter a major timber sale, the spiking of several hundred trees might be a worthy goal, but
even a few dozen spiked trees will be of some deterrent value. It might be noted that on Meares
Island in British Columbia, opponents of logging, working systematically and in teams, have
spiked literally thousands of trees to great effect. But spiking does not have to be on this scale to
be effective
