I've never really been arsed in the past but decided to do it for the start of the RL season, just to see how I'm doing as sometimes I can end up with a shitload of bets on a certain game. Currently keeping track of:
Date - Comp - Event - Selection - Bookmaker - PG/IP (pre-game/in-play) - Odds - Type of Bet - Stake - Return - P/L - Running P/L