I’m reading more about it, and apparently tree spiking has been almost totally abandoned as a tactic for all except a few people and groups here and there. Along with being dangerous for logging workers and incredibly risky due to being illegal, it’s also a fairly ineffective way of stopping any sort of deforestation. Which makes sense when you think about it: if you tell them you’ve spiked the trees they’re cutting as you’re supposed to, they’ll either use a metal detector before cutting or demand they’re cut anyway, which results in both the tree going down and the workers lives being threatened. The main Earth First! organization abandoned it in the 90′s for these reasons, but some of their groups are still doing it.