Nagg the Wreck is called Ingadeen, not on any charts.
I haven't caught any on it but some of the other locations along the east coast of the island produce big GT's.
Take a spare rod or two, you often come off second best messing with those monsters!
Cheers
Jim
Good luck extractor. If all else fails you'll just have to nail a couple more fingers. Give al a call bout the GTs. He should have a good idea where to start