Picked up my Trax 2-30 cart today (30cm soft wheels for hauling on the soft sand) and it appears that there are a few improvements/changes that I was glad to see:
First thing I noticed was that there some beads of metal on each of the cart posts that prevent the collar (aka Cart Post Bushing) from sliding down too far. This is a huge plus for us Pro Angler owners where the wheels tended to rub on the bottom of the hull.
*note: it appears that the directions supplied with the cart do not account for this change.
Secondly, to offset the higher seating on the cart, the scupper posts are several inches longer which allows one to use the "cart keeper" (the little post at the top keeps the cart attached to the kayak when suspended)
Other items of note is a change to how the wheels are attached to the axle. The prior method of securing the wheels was prone to failure. This has been changed but I have yet to test the performance of the new, cotter pin-like, securing device.
This item has been back ordered for quite some time and it could not have arrived soon enough as the Extreme Kayak Fishing Tournament http://www.extremekayakfishingtournament.org
down in Pompano Beach, FL is just around the corner and, when it comes to hauling a PA14 to the ocean, the sand down there is brutal.