Just my one cent to the pile:
Maybe it is time to drastically change the distribution model? Just like most other altcoin airdrops, go with registration and 1click for everyone to receive fixed amount every 24h or so.
No more farming, no more abusing, bots and "illegal" pools.
It works for others than why not for Raiblocks? Yes, its super ordinary, in fact one may say its boring but you can see for yourself where competitive model drove all of us...
Either way, good luck and try to make Rai interesting and fair one more time pretty please