Load balancing setup and pools - only need 1 pool?

[Pootle]

I am working on 1.2-BETA-1-TESTING-SNAPSHOT-05-14-2007, tidying up my load balancing config.

Load balancing (complete with failover) seems to work fine with just the load balancing pool in place (that is without the failover pools from the wiki pages).  For straight load balancing (with failover), should I need the failover pools?  I know these pools are useful for use with rules to set traffic to prefer 1 network, but if they are not needed for simple case, I will change the new version of the wiki doc I am working on to say this. http://doc.pfsense.org/index.php/MultiWanVersion1.2#Setting_up_Load_Balancing_pools