Inasmuch as i'd be opposed to pinning the Canadian dollar to anything, I would be in favour of aiming (for lack of a better term) the dollar towards gold.
The problem with pinning a currency involves legislating an exchange rate, making it legally binding to exchange at the set rate. If the real market value does not match the set rate, then you have an illegal black currency market.
If you simply aim the currency, then it's still free to float on the free market. For example, let's say the government decides to aim 1.00CAD to X grams of gold, then whenever 1.00CAD is worth more than x grams of gold, the government would take action to inflate the currency back towards x grams of gold. And when the dollar value fall to below x grams of gold, then the government takes action to deflate the currency back up to x grams of gold.
So 'aiming' the currency would be different from pinning it in that ulike pining it, the government would still leave us the freedom to exchange the two at market rate, but would simply try its best to manipulate the currency to always bring it back to the aimed value. This way, any inflation must be met with deflation to bring it back to its original value, and likewise vice versa. This would mean that if the dollar value is less than the aimed at value, you know the government will deflate it, and so you can wait before spending it. And same vice versa. This would certainly benefit the poor in that they will be able to actually predict the long-term value of their money, and would feel no pressure to spend it prematurely since they'd know the government will preserve its value over the long term.
Also,inasmuch as I'm not in favour of minimum wages, if we are going to have minimum wages, then putting a stop to inflation would be the only way to ensure it has any effect.
Another option would be to adopt a currency similar to the gold dirham, whereby the value of the currency is intrinsic to the gold content of its coins. I don't now if that would be feasible, but it certainly would have the advantage of being suf-sustaining (i.e. not vulnerable to the whims of inflation) since its value would be intrinsic to the gold content within it.