I just added Kayak Bob's spray skirts to our new TI and they are fantastic.
Prior to the installation I went by our local Hobie dealer (Backyard Boats in Annapolis/Eastport) and picked up 20 feet of the standard Hobie black bungee material. Then to West Marine for some hogrings and pliers, and bungee hooks. Lastly, Lowes for some small wire ties and larger wire ties with screw holes (both UV protected), and some 1/2" by 4" heat shrinkable rubber tubing.
The goal was to attach the spray skirts in a way that they (a) are tight as a drum, (b) look OEM, and (c), can be removed quickly without doing knots, so the amas can be folded quickly and the boat can be put on our jet ski lift with TI cradles, and (d) make no permanent alteration to the base boat. Mission accomplished - see pics below.
The trick is to make the perimeter bungees slightly shorter than the combined length of the skirt sides, and slip on a 4" heat shrink tubing section before attaching the ends together with hogrings. This sets up the right amount of tension to make everything tight.
I added a short (5") piece of bungee through the forward handle hook, and put nylon bungee hooks on both ends. Put the forward end of the bungee over the handle hook, the side bungee over the button on the aka elbow, and the rear over the button next to the forward seat side pocket. I adjusted the skirt to stretch it out fully, and put two small wire ties where each bungee exits the skirt, cinching down to retain the correct amount of bungee outside the skirt for hooking to the attachment points. I installed a small 2.5" bungee section using hogrings next to the forward hatch hold-downs. This is used to hold the skirt tight to the forward part of the boat. Lastly, I put wire ties with screw holes on the skirt just aft of the forward crossbar. I made a short bungee with end hooks to go across the boat to hold the rear skirt section tight to the boat sides - the hooks barely fit through the holes on the special purpose wire ties with screw holes. I route this bungee under the crossbar, and over the mast mount, to get it out of the way. All in all, a very clean installation and a much drier ride, especially with the Ti tramps installed as in the pictures.
Kayak Bob was great to deal with, took only two days for the skirts to make their way from Hawaii to Maryland, and he was very helpful throughout. Here is his website to order the skirts: https://sites.google.com/site/kayakingb ... t-purchase