I keep records on my simulated stuff
Of course. But that might or might not really fall into the category of bookeeping.
I have a lot of records of bets never actually made.
Most of trying to create your own +EV line is testing and retesting and retesting and tweaking and testing and tweaking and retesting and then they change a fukking rule or tell the refs to enforce rules and it's back to square one, tweaking, testing, retesting, tweaking and finally betting.
Thank God I'm an expert trader and experienced market analyst or it would be all too exhausting...