rule no 1) catch bait the day before.... (or buy plenty of large live bait- the bigger the bait the bigger the fish)
chumming bloody guts means mako sharks, but tossing out handfulls of smaller live fish means marlin/bill fish- use mullet, makerel, baby tuna.... thats gold
spend a few hours before daylight catching mullet and makerel with basic jigs or buy a cast net (pref 14+ feet- betts is a good brand- i think cabelas stocks them or just buy bait from a local panga) and learn how to use it well, work the shallows.... get as much live bait as possible... run big plugs and run teasers off of outriggers.... the trophy fish want LIVE ACTION gotta keep that bait as alive as possible
we caught my 400+lbs marlin after it was spotted going for a teaser, then jamming down the hammers, encircling it, tossing out a bunch of life baitfish (like 30+ small ones) and putting 3 or 4 larger baitfish on hooks.... let them do thier thing (hook them through the nose/tail for that live action wounded baitfish look, and hold on tight) a good speed is around 7-11 kts for teasers... at least thats what they thats what i was told last time i was down there.... live bait in the shallows for roosterfish, big teasers and LOTS of small bait for big fish
the bigger the better.... in the waters where fish run 1000+... HAPPY HUNTNG...
sorry cant offer much info for dorado jack or tuna, but marlin... i know a little on how to get into those guys
but once big fish are spotted, speed up a little, then kill the throttle, toss out tons of live bait, and a few big ones on hooks.... big fish are greedy and will hit the big ones first-the little ones get thier attention but the big ones fills thier bellys... marlin/bill fish teeth are rough like sandpaper so use lines with anti abrasive property- you will loose fish one of 3 ways- hooks are too small, line is too thin(not necessarilly not strong enough), or line is strong enough, but doesnt have good anti abrasive propertys... a 500lbs+ fish shaking on the wrong line is like sandpaper to balsa wood... its just a matter of time before it wears through.... wire works.... but HEAVY duty mono works just as well.... personal prefferance i guess....
DRAG IS GOD- know your gear and know it well.... a poorly set drag will loose 100$+ worth of line- it is better to tire the fish out after stripping 300 yards of line than to have it go mad and snap line trying to get 100 yards out.... use at least 250lbs braid.... a 200lbd marlin still took almost an hour to pull in.......
once the fish gets above 100lbs... thats hunting.... good luck learn espanol and talk to the locals.... give em 20$ and they will tell you everything including thermocline locations
and oh yeah, think twice before killing any of your fish for the day..... make sure you check with the hotel/resort/lodge/accomodations and make sure they have a good refidgeration system.... my fish spoiled on the way home due to a bad freezer locker- a trophy fish can be measured girth and length- and relasesd.... vs killing it and having 90% of the meat go bad (my one regret about my trophy) it is mexico afterall.... even if they have good refidgeratrion..... make sure you can get your fish home before it spoils.....in ALOT of the local villas/resorts, you can take a fish to the kitchen and ask it perpared for a meal.... give it to the bar for civeche, but unless you have a sure fire way of keeping it cool.... its a real bitch to try to get all of that fish home- even if you are flying down chances are it will dethaw and once its refrozen, its crab bait..........