Mauikink is legit. I have an order of rope here from them that I ordered about 2 months ago. The customer service rep was sweet and very helpful, took down my custom order.
If your order takes a while to come, especially during holiday rush periods, don't be alarmed, like I was. It will come... eventually. In fact, the custom part of my order is still hanging out somewhere, be it still at their facility or somewhere in the postage system.
They don't seem very good at giving out tracking numbers either, but I like the idea of supporting an American small business, so such things aren't a huge issue.
What I do like alot about the people that run the website is they are active in the community, you can find them on Fetlife and they keep folk updated on what is going on with their company. They have recently posted an update that they are moving from Hawaii to mainland (Idaho I think? Or Illinois?). Just a heads up so that you don't see a different state on a statement and think "Oh man, I'm getting scammed cuz these folk aren't even from Maui!"