Roto,
I got the TC29D with Super Steer and the 72" MMM.
It is not so bad after you get use to it, but does take some time. I am glad that you can use the 3 PH on them with out taking the mower off. You just pin up the deck and it stays to the top position. If you have the Super-Steer it is almost impossible to take it off without having the FEL on. There is a support bar that runs the length of the tractor and I have not been able to figure out how to slide it out the side. But no matter what the FEL raising the front wheels makes it worth having the FEL on. (FEL only for sliding the deck out and in, not for during the hook up process, don't want anyone under the tractor with the bucket holding up the tractor.)
The 72" MMM makes it a long reach for the mid PTO. I usually slide the mower to one side as far as I can to get the PTO on and then slide it back.
There is 4 pins, 2 in the front and 2 in the back. When taking them out you there is a little trick that is not in the book. You take the front ones out and then you raise the back level adjustment one or two notches to tilt the mower deck and then the back ones will come out fairly easy. Reverse for putting back on. Now the pins trick can change depending on how your dealer sets the mower deck up.
I will try and leave mine on as much as possible except for when I have a lot of FEL work to do or if I am brush hoggin. As far as time, 10 - 15 to take off, 15 - 30 to put on. A couple of choice words have to go with it.
They are not the easiest out there to take on and off. I don't know about Kubota, but my neighbors John Deere is a lot faster.
But I will tell you, with the 33D and that 72" MMM you will have one mean mowing machine.
Murph