With the new change to allow boats to be placed on a leash, it is possible to leash multiple of them and use another boat to have them follow you on an ice lane quickly, however the collision push back for each of the boats causes the boats to slow down quite a bit, creating slowdown causing leads to break if the player's boat is going too quickly
Video showing the issue: https://youtu.be/uoBkru8byHM
Comments 3
this happens on water too: https://youtu.be/X9bwGzOfk-Q
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After consideration, the issue is being closed as Working as Intended.
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note: this behaviour is wildly different from other mobs, as e.g. pigs can intersect each other's hitbox so there would be practically no issue doing this with large amounts of pigs or other mobs, but due to boats having hard hitbox collision they are much harder to work with in this case