Go with golf if it will get you into college.....that being said, if you can't consistently shoot low 60s on your home course, you aren't going to make it on the tour (as a career), even though you may get a full ride at a college. I have been playing as a professional for the past 2 years. The commercials on the golf channel are right, "These guys are good". They are the best in the world.
Fishing will always be there. Everyone on this forum is just one cast away from the lake record wherever they are fishing.
I love fishing, and would rather be in the boat than on the course, but you have to stick with what makes you the money.