No pilot is ever taught to "dive to the right" (unless taught incorrectly). Give way to the right per FAR 91.113 right of way rules for approaching head-on - "When aircraft are approaching each other head-on, or nearly so, each pilot of each aircraft shall alter course to the right." If severe maneuvering was actually a "threat" then the policy for wearing seatbelt would be to take them off just before exit not at 1500ish AGL.
You Know Nothing About Seatbelts - Part 2
in General
If severe maneuvering was actually a "threat" then the policy for wearing seatbelt would be to take them off just before exit not at 1500ish AGL.