I am mining (well attempting to) solo mine PPC, with a hash rate of 680 - 690 mh/s.
If I understand it correctly, PPC's current difficulty is 307k, so for me to submit a winning block my best share (using CGMiner) would have to be over 307k.
My issue is after a day of mining, my best share is 1.84k.
So my questions are : Is there anyway to get my GPU to attempt higher shares? Does my best share increase the longer I mine? (e.g mining for 1 day will get 1.4, 2 days 2.8 etc etc)
Any help would be greatly appreciated.
A share is basically a block, it's difficulty is random. You can only get an avg amount of time before you find a block with a high enough difficulty, but in no way can you control the difficulty of shares.
Your avg time to find a block with 690mh/s at difficulty of 307k is 3 weeks or so.