This is just your personal opinion. I think you should keep a detailed drop list, detailed down to how many coins you got for each coin drop. Maybe kill 1k with, 1k without. After that, you total up everything and have a percent drop and a total of everything (well, 2 totals, 1 for each catagory). That's just me though, I'm working on a troll one with more than 1k kills that should be ready for all you tip.iters in a month or two.