A problem with this is that unless you can get tons of people to sign up underneath your referral, you will make nothing. What you need is maybe an affiliate jackpot/affiliate leaderboard with prizes every x days/weeks.
What i know is that every affiliates program is always tend to get more people under you, if there is some big whale may be you dont even need to get that many. But the point here is how much and how quick you can get the profit from them, and bitdouble offer is quite good to earn 1% from total wagered not so this is make sense though