Market it big time , add banners on poker related forums /sites ect there lots of way but it depends how much u willing to pay.
agree...affiliate program...it might take a while to find the one magic affiliate...but once ya land that big fish it is well worth the effort. I always found it's better to overpay when it comes to payout percentages as well...after all thats what gets the affiliates attention. Good luck in a very saturated space