I have two years experience with my 185 on CAP floats. I have Aerocet now, but am reluctant to sell my CAPS, because I really like them.
Pros:
Inexpensive on the used market. $6000 +/-
Fast - they have the least aerodynamic drag of any float, including my nice smooth Aerocets. My hypothesis is that the difference is in the tapered stern, and small transom. 5 kt. speed loss when I put my Aerocets on.
They’re tough - built for big waves. Smoother ride in high seas due to the deep V that cuts the waves instead of pounding through them.
Made in Vancouver, Canada, a source of pride for this Canadian aviator.
Cons:
Not supported - no longer produced. Overcome by the ability to buy a whole ‘nother set for the price of a few parts.
Not preferred for high altitude work. They were designed to work well at sea level, and in rough seas. They have a deep V, and require more power to get on the step than most other floats. Horsepower is diminished at higher density altitudes, so getting on step on a high altitude lake could be a problem. My highest was only 4000’. Wasn’t a factor yet at that altitude, and I’ve got no small lakes at high altitude that I want to get to. Smallest is about a half mile and 3000’ high.
Some claim a narrow sweet spot. I never felt like I was going to dig in a float. The sweet spot was always very evident to me, and I had no problem maintaining it to achieve lift off. I have no STOL kit. Needed full speed to lift off. I don’t find that my Aerocets are off the water any sooner, but they’re heavier and have the drag of the wheels.
Unless you’re in and out of lakes that are less than a mile long, and are high in the mountains, buy a set. They’re good bang for the buck. If you haven’t found any, I’ll let mine go for $5000 USD. They’re near Calgary and I have all the parts to install them.