We have a 06 X2 and ride on the starboard side.
This is our setup: I have one 400# sac in the rear and the v-drive bow sac in the front filled half way ( what I mean is, I take the bow sac and roll the port side up so it will not fill) This puts all the weight on the starboard side. I works well but I have noticed that if I have about 2 adults in the back on the starboard side I have a much bigger surf wake. So I am going to upgrade to the 750 sac. BTW I have no stock tanks in my boat. this allows me to use bigger fat sacs.
We have only been surfing for about a year so I am always looking to get a bigger wave! Hope this helps!!!