Yes it does actually ! - as long as you're lower in the skill you'll not fish as fast as those who are higher than you. Fishing spots are similar to the concentrated ore veins in the Living Rock Caverns; the number of people working them is inconsequential, since the resources run dry/reset on randomised time intervals. It's different from chopping trees for Woodcutting and the like. Actually, the more people at a fishing spot the more likely the spot is to move. Since the game makes a dice roll everytime somebody clicks to fish on a spot. Therefore, its slower to fish with lots of people around because the spots move around alot more. Nope, have you ever fished at rock caverns when there are 200+ people at the same fishing spot? Those spots last 20-30 minutes all the time.The fishing spots move randomly, and it doesn't matter how many people are fishing.