February is the worst month of the year up in north Costa Rica. The wind is crazy, and it blows off the hot water. Maybe you could catch a fish on an inshore trip, offshore is not going to happen. Here's a picture of the wind in February:
If you can get to Carrillo or south of Carrillo, like Quepos (where I'm at) or Los Suenos, you'll do good. But up north is lots of waves and no pelagics.