Cut the trave time by setting up portals. Set up a small base, a few chests, fill them with ore, portal to your boat location, sail and collect ore, sail back. Rinse and repeat. If you are feeling ambitious, and can get a good location, set up a smelting station too, process it on site. upgrade the forge and bench to make use of the ore. Its not as painful as it sounds. I have a seed where 3, sometime 4 biomes are right next to each other. I have a main base in one of the locations, and can get all the ore I need. RNG favoured me that day!