I'm sorry to say that I didn't exactly go through all 15 pages of my last thread and didn't see your comment until now. Right now, I have a spreadsheet of all entries, but not the hashes system. What if I just had an unbiased hero member look at my spreadsheet and use a random number generator to choose the winner, then post the name in the thread?
That would certainly be a big improvement over what you have now. However I would doubt the sanity of an unbiased hero member who would be willing to do something like that. No, I think tescomatty had the right idea. If you need help with the math I'm sure there's plenty on this forum who can help you.