Was the Buccaneer's TFR solely based on MkI eyeball or did you have any electric aids?
Also what was the training for the roll inverted over a ridge technique for keeping low level over the bumps in the ground? Did you have some knowledge of what was on the other side of the bump or how wide the bump was before tackling it (besides normal pre-flight planning) or rely on being able to see the ground ahead whilst inverted to then decide your next moves?