2004, our bags I believe in the back were 250#. I have upgraded to 400#.
Check out Wakemakers.com to see if you have similar fittings currently. If so, the bags should work and check out blemished bags for discounts.
I wakeboard and haven't really surfed off ours. It would work as I have done it with holding the line (newbie on borrowed board), but more the better. On a 2004 that was set up for surfing, they had 1100 and 700# sack and one 400# in rear locker with the rear bench seat taken out.
2004 Supra Launch 22 SSV
5.7L Indmar Assault
"One More Hour"