We have been to CM 7 times, goin gback the end of the year again. We have done the CHarter 2 times, ofrget the name of the place, but as far as I know there are only two boats working Negril. The one we went on was about a 32 ft boat, cost was about $500 for 6 hours. The boat fit 3 couples well, more than that would be crowded. I did not like it, was not worht it . We did not catch a thing, was way to hot on the obat. Views were nice, we did see dolphins on the one trip. I have spoken to others who have gone and loved it, and cuaght fish.
Now rather than the charter, I go out with one of the local fishermen in thier boat. There is one that works CN, he is Mandela, parks his boat on the beach next to CN. His boat is a overgrown canoe, charges about $50 an hour, and its great. Can be a rough ride, so be prepares to boucne around. But i never laughed so hard as with him.
went out twice with stanleys they keep their boats near. we caught several tuna both times. had a greatr time both times. last october 4 of us went. $600. time before 11 of us went. $850 i think. both times 1/2 days. took tuna back to be cooked for supper. it was great. they are on the web. or they can contact them for you at the resort.