2) On changing the receive address, it does change the blockhash, but then it also reveals the "key" to breaking the idea you posted about choosing the winner.
Timestamp wont help either. Either one can be manipulated by the miner, and make themselves the winner based on the table.
Maybe take sanctuary recipient address instead? Or a combination of sanctuary and miner? Or include BibleHash... Or taking the last two digits/letters (16^2) and you have 1 in 256 chance miner will get the block. I'm sure there's a sweet spot between complexity and hack proof. If you can distribute rewards to different solo miners more often, you may not even need a pool. Then One Click Miner Configuration is all that you need
@jsheets the One Click Miner Configuration line ending issues should be all fixed now. I'll do some more testing, but I can confirm 1.4.4.9 works great under macOS .