I have been using the C-Tug to avoid getting wet when retrieving the TI in the Winter months. I find it difficult to insert the Trax2 scupper cart in the middle scupper without getting soaked.
The C-Tug can be slid under the hull easily by 2 people standing either side of the kayak using the cart straps but it works best using the double cart method. At the ramp I lift the rear of the TI and my wife fits the Trax into the rear scuppers. Then I float the TI out a bit, turn it around and we slide the C-Tug under the bow. This way you have very little weight on the bow handle.
I wouldn't like to wheel it a long way though as the pads don't conform to the shape of the hull and the cart can move around a bit even with the straps up tight.
The C-Tug is a clever design, is well made and very strong. It breaks down in seconds and can be stored easily in the hull. Despite these advantages I don't regard the C-Tug as a replacement for the scupper cart. It works best in combination with the scupper cart.
My cart of choice is definitely the Trax2 fitted with pneumatic tyres (despite the odd cracking weld
). The keeper pin in the latest Hobie carts is a big plus when sliding the TI off the trailer, the scupper cart stays put and loads only the scuppers (the strongest part of the hull).