Please join dmdpool.net. It will increase your possibility to solve blocks. Even you can not, you are paid by what you contribute
i did, mined in the pool for an hour and got 1 diamond.
Solo mining gives like 5 diamonds in 1 hour, because the network speed is so low
Solo mining will give you lots of variation. You may get 5 diamonds in one hour and then no diamond for the next 8 hours.
Pool mining gives more predictable winnings - plus, you keep the network secure.