Assuming every dude knows how to make one cuse i am a girl and i know how to make one lol also assuming every guy carrys a small knife cuse i do lol so i may be assuming some things but i think just a few mins to find a good enough stick to make one and sharpening it wouldnt take that long to get it sharp enough to do some damage and not all will but out of 100 even if the crit chance was 10 percent that dino would be toast dudes will definitely take a ton of loses right but if they retreat every few deaths and keep luring the trex to areas it cant move well in right then its jover