I own an Aire Couger. This boat has a twin tube design made in the mid 80's - 90's that was later discontinued. You can call Aire with the serial number and they can provide a purchase date and additional info. I found the serial number on a small metal label on one of the tubes. If memory serves the last two digits of the serial number are the year of manufacturer.
I love my boat, but she is a little temperamental. It is extremely sensitive to trim, I need to load her so she rides dead level. If it is a little bow or stern heavy she rows like a pig. The twin tube design has a great wind profile, but the 14" dia. tubes don't offer as much clearance as the single tube designs that are 18"-20" in diameter. So my floor is VERY close the the water line and the boat is easily overloaded. The other disadvantage of the twin tube design is there is only 30" between tubes, compared to 40" or more on a typical single tube design. This will limit the size of a cooler or dry box that will fit the boat.
The twin tube design also means a standard cat frame does not fit. If seen a number of these tubes on sale in the used market with the wrong frame. Make sure your frame really fits the boat and the tubes sit level.