The rules for target archers now say:
“When drawing back the string of the bow an archer shall not use any technique which, in the
opinion of the judges, could, if accidentally loosed, allow the arrow to fly beyond a safety zone
or safety arrangements (overshoot area, net, wall, etc). If an archer persists in using such a
technique, he will, in the interest of safety, be immediately asked by the Judge to stop shooting
and to leave the area”
At one time it was very common to raise the bow quite high as you drew back with the obvious consequences if you hand slips on the release aid fails etc.
Its good to get into safe habits while you re practising at home as well – helps to build muscle memory.