ReinsMod

Reins Whip is the tool at the center of the mod. Equipping it lets a player take control of animals, and once a horse or other tamed animal is reined, its movement can drive an attached Valkyrien Skies 2 ship. A player holding the whip can freeze their own movement while steering from the saddle. Two options control automatic travel, and a reined animal can be released by crouching and right-clicking it.

Fence blocks placed on a Valkyrien Skies 2 ship serve as attachment points. A lead is used to tie a reined animal to one of those fence blocks, which connects the animal's pull to the ship. Reins can be removed the same way, and the whip can be unequipped and re-equipped at any time. The Reins Whip sits in the Tools and Utilities tab of the Creative menu, and its recipe uses one lead, one iron ingot and three string.

ReinsMod is for Forge 1.20.1 only, and Valkyrien Skies 2 is needed for the ship mechanics. Version 2.4.9 or later is preferred, and Trackwork and Create are listed as recommended add-ons. The mod is client and server, so the server and every player need it, and it is released under the MIT License as open source. Single-player testing was thorough and the author considers it stable for normal play; server use was tested as well.