The way Surf Cup split olders and youngers likely affected who would attend.
This year 2010 is the oldest group for Surf Cup Youngers. Both ECNL and GA 2010s just completed their fist season + most clubs would consider them part of their olders group.
Usually olders in clubs are coached by a specific group of coaches. By making 2010s part of the youngers Surf Cup forced coaches to be in San Diego 2 weekends in a row if they wanted all the club teams to do Surf Cup. Because of this it looks like some just chose to do olders + skip the yougers (2010s and 2011s)
This year 2010 is the oldest group for Surf Cup Youngers. Both ECNL and GA 2010s just completed their fist season + most clubs would consider them part of their olders group.
Usually olders in clubs are coached by a specific group of coaches. By making 2010s part of the youngers Surf Cup forced coaches to be in San Diego 2 weekends in a row if they wanted all the club teams to do Surf Cup. Because of this it looks like some just chose to do olders + skip the yougers (2010s and 2011s)