I’m somewhat new to IF (I reached grade 3 about 6 weeks ago) and was wondering how much extra fuel I should normally have. I usually put about 45mins - 1hr extra fuel on short hauls, 1hr - 1.5hrs for medium haul and 2 - 3 hrs for long haul. Am I doing this remotely correctly? What am I doing wrong? Let me know what you do! Thanks!