We have received reports in the past about X-Plane 11’s seaplane dynamics when the aircraft is in the water.
If you would like to test sea plane water dynamics with an experimental build, please email Austin directly – he has some fixes for seaplane behavior and he is looking for early testing.
Update: fearless leader^H^H^H^H^H^H^H^H^H^HAustin says he is only looking for testers who have experience flying a real world small float plane with pontoons, so that he can get test feedback from someone who can validate the reality of the physics.
(You will need to install a custom build from him on top of X-Plane 11.31 to do this.)
Update 2: fearless leader^H^H^H^H^H^H^H^H^H^HAustin say he has enough testers. If you’re not getting builds now, you’ll have to wait for a public beta.