My Takuma efoil loses the bluetooth connection every time water washes over the board. I’ve tried a new “ESC” with an antenna. I tried adding an external antenna to the ESC antenna. I tried a new remote. Nothing keeps the connection reliable. When it gets wet you have to hold the remote on the surface of the board in the vicinity of the ESC to get it to connect.
Here’s the antenna I tried: Amazon.com
Does anybody have any advice on how to make the bluetooth connection more reliable?