Hi David,
look up anything you can find on Behourd style tournements.
http://www.chronique.com/Library/Tourneys/behourds.htm http://www.aemma.org/misc/events/wmaw_2002/tourn_behourd.html
This article mentions the use of wooden weapons in judicial duels, but they are clubs.
http://www.thearma.org/essays/wasters.htm
"Fighting with sticks or cudgels was an accepted form of combat for judicial duels in Medieval Europe. In the 15th century, Olivier de la Marche, for example, told of a judicial duel between two tailors fought with shield and cudgel. In his 1841, The History of Dueling, J. G. Millingen related a duel in 1455 at the French city of Valenciennes between two burghers using “knightly cudgels of equal length, and bucklers painted red”. (Millingen, Vol I, p 363). The town even furnished the combatants with instructors to teach them the use of the club and buckler. The early 19th century chronicler of duels J. P. Gilchrist related a 15th century statement that in duels among commoners, “The weapons allowed them are, batons, or staves…and a four-cornered leather target…[and] in France villeins only fought with the buckler and baton.”[3] Shakespeare even included a judicial combat fought with sticks between a common armorer and his apprentice in his, Henry the VI, Part 2. "
It also mentions a couple of other duels with wooden weapons as well.
Here is an article on the Venice Bridge Battles.
http://www.thearma.org/essays/BridgeWars.htm
Hope this jump starts you in the right direction.
Brian Hunt
GFS
http://www.paulushectormair.com