Increased surface area is definitely an issue and winds do have a significant effect on it so attention to the winds is a must. My buddy says he's going to make some with pool noodles but I think my raft is going to outshine his model. I'll get him over here to tool around with it and have him take some shots of it in action. I have a pool out back too so I can demonstrate take offs and landings. I'll need help posting up the flight records as that's above my paygrade, I'm pretty good mechanically but when it comes to tech, I'm lost.I'd be much more concerned about how much it increases the cross-sectional area that it exposes to the wind and how much that reduces the drone's speed and acts like a sail to catch the wind.
Blocking the VPS sensors is also a concern, but it would be interesting to see the data to show if/how switching to Sport Mode works to allow descent.
If you want to find out more, take it out for a short flight, do a couple of straight runs at maximum speed and then bring it back to land from 30-40 feet up.
Then post the data.
Go to DJI Flight Log Viewer | Phantom Help
Follow the instructions there to upload your flight record from your phone or tablet.
That will give you a detailed report of the flight.
Come back and post a link to the report it gives you.
Or .. just post the txt file here.
Here's my first prototype in action. Two tubes wouldn't even hold the drone upright in water and I'm surprised at how much just one more tube increases stability on water. BTW, those are Coors Light cans and they're longer and skinnier than standard cans. I might try a set with standard cans to see the differences.