Ho do you feel about spearing?
I think the OPs question was too general, but still a good one.
Edit: I stand corrected. The tribes, being sovereign nations, fish the way the treaties dictate with input from the WDNR.
2013 walleye spearing statistics: 432 spearers, 28,386 walleye harvested = 65+ walleye per spearer.
CPE (catch per boat hour) = 17.9. On average, every hour a boat is on the water with effort directed towards spearing walleye, 18 fish are harvested per hour!
Hook and line angler harvest of walleye in the ceded territory per hour of directed effort is about 0.05 walleye/hour of directed effort (20 hours/walleye harvested). This information is based on the same creel surveys esox mentions.
So right now spearing walleye results in a 358x increase in harvest per amount of targeted effort. That is the very definition of slaughterfest.
If you want to argue that tens to hundreds of thousands of hook and line fisherman have more impact on harvest than a few hundred spearers, go ahead. But claiming that hook and line fishing is easier than spear fishing, that is a blatant lie.
Open water spearing at night using spotlights in a moving boat is extremely efficient and therefore detrimental to fish populations.