I agree the dismantling and packing everything in the car takes time. (Hence if I had the option I would also use a trailer)
I do take the mirage drives out and stow them in the bags for transport. The seats could stay in for short trips but usually we travel from home to a distant camping area and then unload so I prefer to not have the seats whipped by 100Km/h winds and covered in bugs.
The T-Bar at the front provides a really solid point to better distribute the weight and allows me to pull the hull forward so that the rear does not interfere with the Camper Trailer.
I have also considered lowering the just the kayak from the side straight into the water when we are on a river but so far the river banks we have been on are too unstable and sloping to drive the car right up to the edge as you can see from the photo. Our camper is the one on the right.