I don't think there's a need to put your coins to stake in a pool for pure. Pure has been one of the easiest coins to stake no matter what amount you have. I had 400 coins and I was staking good amounts, not daily but the more I earned the faster I was staking so I never needed to use a pool to stake.
Yeah I understand, I use it so that I don't have to leave my PC powered on all the time as well as the fact that I will soon be making more in referrals each day than off of my mining rig.