I don't think any Cobes have been seen yet.. we would have heard about, just rumors still. If you want to fish the Gulf, I would either bottom fish if you have a bottom machine (can't keep anything though) or fish for sheephead. Pompano and reds are really starting to move along the beaches as well.
Well there used to be red snapper but theres only a couple left in the gulf now! Those darn rec. fisherman just wiped them out. As far as kayak fishing in the gulf its been so cold this year you might be coming down a little early. If you can get to a reef bottom fish, theres always sharks, bonita and red fish but the migratory species we see in the spring might be running a little late this year unless the water temps jump up quick