The Double Rider System for the wearable Bento Water Horse Riding Horse is now available. The system requires you to own either the Warmblood or Western Quarterhorse and requires rez rights on the land where you will use it.
Instructions provided by creator Tyrian Slade:
"To ride:There is also a rezzer version available separately that rezzes a double rider horse.
1) Horse rider sits on ball
2) Passenger clicks on horse and selects ride!
You can adjust riding position or switch drivers by clicking the horse's body and following prompts.
If you get stuck on anything, try jumping"
To purchase, visit the Water Horse sim at the following SLURL:
http://maps.secondlife.com/secondlife/Water%20Horse/75/52/22