Tutorials/Endless circling pool

Endless circling pools, also known as AFK pools, will let the player or any player-sized mob that gets in the water circle endlessly around the center. Most servers prevent players from being idle for too long by kicking them after 15 minutes or more. Even if you use the AFK command (if the plugin is installed), you will still be kicked, so some players make "AFK Pools" to prevent being kicked.

Construction
Material: At least 15 blocks (like stone bricks), a sign, a water bucket, and a stair or a slab. Note: Darker blocks are 2 blocks high.
 * Schematic


 * Layered blueprint

Construction notes

 * The stone bricks can be any solid block.
 * The slab can be of any type. It can be any block one automatically step up onto, that water will not wash away.  It can also be stairs positioned so that it steps from the lowest water up into the water source.
 * The water source block (marked with an S) will flow down, and around to under the sign.
 * After the water is flowing correctly, the sign can usually be removed without making water flow in both directions.

Usage notes

 * The sound that the blocks make may disturb the player.
 * These are commonly used for AFK players, so that they won't get kicked off.
 * Sometimes you will stop moving, and will need to manually move the player to start again.
 * This may be against the rules of your server, particularly if it has an auto rank system to give benefits for playing longer, or is often near the player cap. So check the rules before constructing one.

Video
A tutorial by JL G4M1NG.

教程/挂机池