cheap vs expensive
Yeah, it'll work. The primary differences between "home depot rope" and line made for use on sailboats are mostly:Stretch. That home depot rope will stretch a lot, especially at high loads (sailing in high winds). While this isn't really that big of a deal, instead of the force on the sail being translated into force pulling the boat forward, some of that energy is spent stretching the rope. UV Resistance. The home depot rope doesn't stand up all that well to UV. I use it to keep my tarp covering my boat, and after two months in the sun, it's noticibly more stiff and the outer jacket is much more rough than a fresh rope. So if you leave your halyards on the mast and don't cover them, the line will wear out pretty quick.Comfort. "proper" yacht lines have a much denser weave to the fibers of the outer jacket, so your hands don't get all scratched up from hauling line all day. This gets MUCH worse for the home depot rope if it's been in the sun for a while, as the outermost fibers get nice and rigid.Most of these differences aren't really that big of a deal. Rope from Home Depot is so cheap, you can replace your lines five, six, seven times as often as you would with "proper" yacht line, and still have spent less money. The only difference that I know of that might be of concern is that when rope gets wet, its breaking strength is lower. By how much depends on the quality of the rope. But I don't really know too much about this to know if it'd be a problem with the Home Depot rope.So it's up to you. I just wanted to point out the differences between the cheap stuff and the expensive stuff.