I would also be interested in the experience of others, but the few times I have readied my 235 from trailer to water, on my own, has taken a good 2 hours, and once out, I man still tiring up various things. It also depends if your sails are in place or not and of course how often you do it. The same sort of time to dismantle plus the extra time to get it on the trailer which one has to be a little more careful with than launching.
If you haven't found your 235 yet, I am thinking of selling mine for around the £13,000 mark. She is moored off Exmouth if you are down this way.
Paul.