[Nomad84]

I'm not sure of the specifics of how to do it, but what you need to do is figure out how to hedge your currency exposure. What you want to do is figure out how much exposure you have to the dollar in terms of your investments, your USD denominated bankroll, and possibly a portion of your future expected poker earnings too and hedge this amount. You would want to go short USD/long CAD (I think) in this amount so that future fluctuations in the exchange rate won't affect the CAD denominated value of these assets. You'll have to adjust this hedge as the value of your USD assets changes (investments going up/down, poker earnings/withdrawals), but this should maintain your CAD spending power rather than leaving it to fluctuate with the exchange rate.