RE: evo XTV --- where toget a bigger fin
Although I'm not from the Starboard team, I've found that True Ames' Enduro line is a great wave design worthy of consideration, and it's manufactured from G10. The Enduro is my wave fin of choice. Check them out at their following website:
If you find interest in these fins, and you are subsequently having difficulty finding a retail outlet, you can always stop by the True Ames facility by the Santa Barbara airport. Tons of fins in all sizes.