This will unite the very first suggestion with OSRS gold the wait feature of farming. Also a new fish will probably be creating an apperence. First you purchase a trawler off any sailor for 500K (500'000gp), Then you get on the boat and use the fishing equipment with the net holder, Then use the lure with the internet holder, Click on the steering wheel to set sail, Then when your done, click on the row boat and it'll take you back to port sairum.
Remeber that feeling of pride you got when you finished dragon slayer? How can you access to Crandor? By boat of course! How can you visit Pest Control to save the Void Knight? Boat! How do you go to Brimenhaven Dungeon to have some metal dragons? Boat of course! Boats are used regularly in RuneScape.
You consistently have some NPC sail you to some island. But why can't YOU bring yourself and not have to pay that little amount of $ that takes up inventory space. Well with the new Boating Skill now you can. This is the way it works. It goes something like construction, but you operate at Port Sarim, Port Phasmatys, Port Khazzard etc.. You'd buy planks just like in Construction and you would work Old school rs gold on your boat. You'd need a saw to cut the boards, Nails, Planks (Of different kinds like construction) hammer and then of course yourself. Then once you built all the parts of your boat you can add things such as a flag or have the emblem of a clan on it. Then you may employ a team. It's possible to hire a navagator, chef, pirate etc., to help take care of your ship.