Hi there I'm using the mini 3 pro and I manily film surf , I fly low but obviously still above the wave height , ocassionaly the drone will increase altitude itself . Everything is fine when I'm only apx 500m away but when I venture out further or down the shoreline apx to 1 to 2 km I constanstly get weak signal warning. I still have line of site the whole time but the only way I can avoid this is to stay high around 30m , which is not where I want to shoot from. It's supposed to have a 10km range and I understand peaking wave heights can momentarily block the line of site but sometimes I loose signal for up to 10 seconds. Any advice tips appreciated.
This is a typical video I shoot and I lost signal this day as well and was well within 1000m.

https://www.youtube.com/watch?v=cie2PIzK5Ak

Thanks Rob  

Are you keeping the arrow in radar view green all the time or does it turn blue?  If it blue you're not holding the controller correctly.