So I kind of found a glitch in breath of the wild with boats, pretty much your able to take advantage of the physics system to reach up to speeds that would seem impossible. Basically, in a lake of some sort or ocean, get a Korki Leaf and hop on a boat, then attack with the korki leaf. After this stage you would continue to the next animation but if you stop for a brief second and then do it again, you will gain a slight increase in speed until eventually you do it so much you will reach extremely high speeds. To further increase the speed if for whatever reason you want to go even faster, you can try getting a speed buff which I think will increase your movement speed and attack speed with various weapons. If you wanted to take it to an even further level you could try to find some armor that increases movement speed. Which may even make weapons become even faster than what regular potions/food offers. Oh yeah and I haven't tested this yet in the sky with boats, so I guess you could also travel at extremely high speeds with the right setup .