Is the end goal here is to bolster our own economy by making US goods prohibitively expensive for Canadian citizens to buy, in turn making Canadians more likely to purchase Canadian goods (which is what we are trying to do anyway)?

The end goal of retaliatory tariffs are to make US businesses lobby their government to have our tariffs removed so that they can resume sales.

We should put export tariffs on energy and other critical goods that US needs in order to raise US inflation without cost to Canadian consumers, and with a boost to Canada revenues. It is the US consumer impact that would affect popular opinion against the tariffs.

FFS, we should make sure China buys our agriculture instead of US agriculture.