Tunas can be trolled near the humps that time of year and its not impossible to catch a sail near the edge but not in numbers you can count on... Some stray marlin get picked by those hunting the dolphin...
there are always 'some' sails on the edge and kings, grouper, snapper, tuna and lots of dolphin ... you will have fun! get a top spot chart kit for the area you are going to be fishing in and have fun. lots of swordfish also...