Yo yo will work, but it does not provide you with the advantages of using a rod and reel, even while trolling. The Yo Yo is just something to hold the line and doesn't take up the space of a rod and reel. However, it does not have the sensitivity, hook setting ability or drag system of even the cheapest rod and reel system. If you want to consistently catch fish, even under the worst conditions, you need a rod and reel. This alone, however, will not put fish in the cooler chest. You need to learn about fishing various forms of structure, how to read the water, how to locate the structure on your charts, correct bait presentation, types of bait for specific species, feeding habits of the species, temperature comfort zones for each species, and more. Fishing isn't just a matter of tossing a bait or lure overboard and a fish jumps on your offering and commits suicide - it's an skill that requires a fair degree of study to be successful. More so than sailing. It's far more complex than most people realize. Granted, there are times when the fish seem to be jumping in the boat, but those situations are indeed rare. The best advice I would have for someone just starting out would be for them to go fishing with a licensed charter fishing captain and learn as much from that trip as you can. Ask questions, take notes, and learn why and how this individual is successful. It can be well worth the time and effort, and you should have a lot of fun in the process.