When I was getting ready to get mine installed I spent a couple of weeks looking at previous installations. If I saw a carport like I wanted I stopped and asked the homeowner who installed it and were they happy. One contractor name came up three times and that's the one I used. Plus, their price was acceptable.
Most, if not all, will say they can do the job in one day and that is correct. However, if the wind is blowing 12-15 knots or more they won't (and shouldn't) put up the long roof/side panels if more than 25 feet until the wind subsides a little. They told me even with four guys holding the panel (40 feet in my case) they can easily lose it to the wind...and a wind driven piece of sheet metal can do a lot of damage or cause big injuries. My contractor had all the base, side posts and roof support up and ready in about four hours. They can back the next morning after the wind quit and finished the job in just under four hours.
At some point during every day you suddenly realize nothing else productive is going to happen the rest of that day. For me, it usually occurs around 9 am.
Vengeance 25V (the Harley needed a home)