I hosted an open Arimaa tournament at the Gateway 2007 gaming convention in Los Angeles, on September 2nd, 2007.  Eight competitors attended, all novices, and six of whom had never played the game before this convention.  
 
Arimaa Tournament at Gateway 2007    
Setting up the tournament
The prize set.
Me, teaching the rules
Main table of boards.
Overflow table
And they’re off: the first move of round 1.
Round 1
A wider shot showing the two tables and players.
Me standing by the tournament table.
The two semifinals games.
Final round: Judson Lester vs. Ben Tobin.
winner: Ben T.(sitting), 2nd: Judson L.,  3rd: Stacey A.