It is more efficient to fish in a group for gaining experience in Maplestory Fishing in a group allows players to catch more fish in a shorter amount of time, which translates to more experience points. Additionally, fishing in a group allows players to share bait and lures, which reduces the cost of fishing. However, fishing solo can be more relaxing and allows players to fish at their own pace. Ultimately, the choice between fishing in a group or solo depends on the player's preference and playstyle.