looking to buy a second hand wave board 17 years old 70kj already have a 69l jp need something with more voloume any suggestions??

Hey mate, 95 - 105 is massive I wouldn't bother with a wave board that size it won't turn anyway. If you want something that big that's still fun aim for a freestyle board. If you want something for light wind wave sailing something around 80- 85 would be the go. See if you can borrow a few boards a different sizes. A fsw will be better than a proper waveboard if you're mostly sailing in the bay.
I have a few boards you could try if you like and I know the Zu has heaps of demo boards at the moment. The other shops probably do too just give them a call before you go in.

Hey mate, the bigger Goya quads are awesome light wind wave boards. You would need to experiment on how big is too big for your size but I know the boys at Goya/Quatro Maui have been sailing the 118 in very light winds and loving it. I'm 100kg + a few Christmas beers and can comfortably sail (non planning) and catch waves in as little as 12-15 knots. These boards are awesome on a wave. I'm pretty sureCore board sports in Geelong have a couple of sizes for demo.

If you ever buy a big wave board from Quatro or Goya, better be over 80Kg...in 2013, those got thick edge and need a lot of weight to make tight radius. I tried Quad LS and Goya Quads from 78L to 98L in DDL ideal condition...bigger than 84L for my 75Kg...doesn't made it fun at all! Probably for a less than perfect world..would probably like the extra volume.

I preferred the KT and did not have the chance to tried the newer thrusters they made.