You can accept all you Uberpool requests and get paid the normal rate. All you have to do is accept the trip and as soon as you do just tap the 3 bar menu on the top right hand corner of the app and click "STOP NEW REQUESTS". The app will think your going offline and won't send anymore requests. Since you won't be picking up any new riders you get the full amount. Uber pays the difference because the pax still gets the discounted rate. This will in turn keep you acceptance rate high and the pool passenger will most likely give you a better rating.