Yes, I have Mavic 4 Pro, but only RC2 (I am in a hunt to get the RC Pro 2 from somewhere for a reasonable price), I will have to check for this Dynamic Home Point feature; while I don't really do off-the-boat flying, I could still find it useful
Be aware that DJI has added a dynamic home point feature to the Mavic 4 pro. And the default setting is apparently "on." You might want to confirm how your drone is operating with the new option before relying on RTH to act as expected.
Dynamic...