You'll need whatever you choose to mount it with. The TI is pretty easy, not requiring extra Hobie hardware, but depends on your choices. I use light 50# working load line, wire-ties, and a small anchor-shackle for the bow mount (no bungees). If you fold in the ama while on the water a lot, you might want to add some way of quick release at the hull like cleats.
My wife Dee sends an email response to acknowledge the order with links to many forum posts showing how others have mounted theirs. And I'm available by email or here, to answer any questions also.
Like most things, after the first one, it's quite simple.
I've done about a dozen of them, and it it now takes me about an hour or so, while gabbing the whole time.
Here's one of the better documented installs, but does use bungee. http://www.hobiecat.com/forums/viewtopic.php?f=69&t=26262&
This setup with light line instead may be perfect for you. Watch the hog-rings though, as their about the only thing that can regularly damage the shadecloth material. On the original AI design, they held the bungees on the aka SS pins, and can catch on shadecloth material and rip it.
- - - - - Hobie Island Sailing since 2006 - - - - - 2011 & 2015 Hobie AIs and a 2012 TI