Would it not be better to just dismiss the idea of the the scupper hole cart as a weak idea from Hobie and go back to the idea of a strapped down inline cart ,or 2 if needed in very tough terrain (especially with a potenially heavy boat like the TI with a full load)
Mounting 1 or 2 carts near to the center handles of the TI/Ai, depending on, the weight balance factor from our respective hulls?
Great idea to make a set of loose fittings more tight with add ons as more stability is needed to stop the slop on the fittings. Shortening the tubes and having a set of dual locks on a shortend top to cut down the strain (torque) factor to get these carts mounted under water is also highly needed.
(If you rattle over 75 feet of loose pebbles to get steeply home), you will realize shortly that using the scupper cart will eventualy rip your boat apart.
Yet, why risk the hull when a simple set of straps attached to a moveable cart is far easier to mount in the water, by a simple 90 degree 'flip-down' from the ocean (lake) and slide the craft onto the rails.
(WTF, am I being slow here?)
I doubt it. That standard idea of that cart has been used for years. It works. It has served me well for years with a 21' double sit-inside, an Innova Double Sunny 11', and this AI.http://www.outdoorplay.com/Malone-Delux ... tegory=268
I agree, the ultimate aim of these forums is to get these well designed vessels just a 'wee bit better'
Yet sometimes it get as good as it gets without having to worry about tearing your boat apart reinventing the basic ubiquitous kayak cart....
If you want my scupper cart, pay the shipping and it's your's. (However, you've heard my warnings)