it is a fools game because of the risk of falling off and the boat leaving you stranded
you don't need to take stupid risks to learn how weight impacts your helm
you could...... move forward, move windward , etc
I have a good friend that used to get behind his boat in 1 knot of wind and get pulled by his rear crossbar, until the day he had an issue and his boat left him, He was lucky someone saw him and picked him up before it got bad
Also, you can helm with just your trim, no rudders, also a good skill to learn incase you have 2 rudder failures
what do you think the odds of falling off a pointy bow with no one on the helm vs. the odds of 1000lbs steel wire or harness failing?