I've fished the Conrad boat a few times and as George says it is good and the skipper specialises in GT popping. As for popping off the decks - well thats a 500 buck fine on any resort if you get caught as all of the resort islands are strictly no land based fishing. The Conrad is a GREAT place for a honeymoon, top resort, 41 ft Riviera (with resort prices to match, although it does have a capucinio machine and Bose stereo....). You can also eat underwater in the resteraunt and watch Gt's cruise over your head as you dine.
The Hilton also has a boat, although the crew didnt know anything about GT popping, more a trolling deal, needed your own gear.
The Kanuhura also had a great boat and a guide service (or rather it did when it was a One and Only resort) as well as deserted islands nearby where you can wade the flats casting at GT's/Bluefins and the like, as well as bonefish on fly etc.