MAC
You asked for pilots with actual device experience but unfortunately you seem to be getting a lot of responses from bloviating people. That is too bad.
Here is my recommendation based on my actual experience. The product I use is a drone life preserver from drone-retriever.com
Fight performance: stability (how does it affect flight especially if there is a headwind) and flight time loss due to size and weight?
Answer: Flight stability: It flies like it is not there. If you fly in sport mode it will take a slightly longer distance to stop.
Answer: Flight Time: I lose about 5 min of flight time, more if I am flying against a headwind. Yes you lose flight time but after you fly with it for a while, you will naturally adjust and not notice that you have lost flight time.
Ease of attaching and removing for flights over land?
Answer: Very easy to attach and remove. Mine is attached to the top of the battery. When attached I pick up the drone by grabbing the unit. The 15” zip ties provided are reusable and I use them when flying on land to retain the battery. Check out their mavic application notes regarding the battery.
How would you rate the construction of the device? Cheap Chinese made or High Quality?
Answer: High quality professional device definitely NOT cheaply made.
Do I need to replace it after a crash or can I reuse it?
Answer: It is reusable there are 2 items that need to be replaced the CO2 cylinder and the trigger bobbin
Do I need 1 device for each drone or can it easily be attached to either of my drones (Phantom & Mavic Platinum)?
Answer: The unit can be moved to either of your drones. They provide a velcro type of product called dual lock which I cut in half to give me more pieces for all my batteries. You can get more at Walmart. One important thing that I found is that you need to clean the mounting surface with alcohol and after you mount it, the adhesive on the velcro becomes stronger over time. After several days it becomes very difficult to remove but you can still remove it.
With device attached can I fold up the Mavic Platinum drone or do I need to remove device first.
Answer: With device attached you can easily fold up the drone. There is no interference. Also I pick up the drone by the unit as it makes a kind of nice handle.
Cost of device. Is it overpriced?
Answer: I purchased mine for $79.00 "delivered" from their site and it comes with a 100 day satisfaction guarantee. A colleague of mine purchased from Amazon but he had to pay tax. The company is in NH and so, no sales tax. I find it to be a very cost effective accessory.
Your personal opinion on the product?
Answer: This device meets my needs for a compact life preserver for my drone at a reasonable price.
Side note several people have recommended other products while responding to your request, take a look at drone-retriever.com website as they have a section on their competition which is very enlightening.
Although I have no experience with getter back or floats so here is my opinion.
- Anything that acts as a sail on my drone will be a problem in wind.
- Anything that restricts downward airflow from props will be a problem for performance and will dramatically reduce flight time as the motors have to overcome the weight of the device AND the restricted airflow.
- Anything that extends below a drone that floats will end up pointing upward after a crash and be very difficult to find especially in waves due to its low profile.
- You never see the devices that land on water floating on real waves. The reason is that if they land on a wave they are top heavy and will easily flip over.
- Getter back is small and does not activate unless water is greater than 10 feet deep. If it does activate, try and find a tennis ball floating in the water 300+ feet away from you especially if the water is not flat.
Finally you posted this request for help on the “GENERAL DISCUSSION” page you may want to post it also on the “CRASH & FLYAWAY" Help page to get a better response.
Good luck with your investigation and happy flying…. stay dry!