any tips for when flying over water with M3Pro

[Meta4]

Sorry, still disagree, I was there, and coming back home over the shore the sun was still in the same position and angle relative to the drone but with no issue over land. When I tried going back over the water half way home I got the same obstacle avoidance issue again and went back over land.

You had obstacle avoidance react to something, but it had nothing at all to do with the water 350 feet below.
Obstacle avoidance reacts to things in front of the drone, not hundreds of feet below.
There's a lot of confusion around with people convincing each other that sensors become "confused" over water and it's all a big myth.
I've flown thousands of miles over the ocean, high and low and have never seen any evidence to support the confused sensor myth.